diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e4283446..7a605fd7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,18 +9,20 @@ jobs:
         os:
           - ubuntu-20.04
         dc:
+          - dmd-2.108.1
           - dmd-2.101.2
+          - ldc-1.38.0
           - ldc-1.30.0
 
         python-version:
+          - '3.12'
+          - '3.11'
           - '3.10'
-          - '3.9'
-          - '3.8'
 
     runs-on: ${{ matrix.os }}
     steps:
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install package dependencies
         run: |
@@ -29,12 +31,12 @@ jobs:
 
       - name: Install D compiler
         # must go before setting LD_LIBRARY_PATH for Python since this overrides it
-        uses: dlang-community/setup-dlang@v1.3.0
+        uses: dlang-community/setup-dlang@v1.4.0
         with:
           compiler: ${{ matrix.dc }}
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -66,4 +68,4 @@ jobs:
           LD_RUN_PATH: $PYTHON_LIB_DIR
           LIBRARY_PATH: /usr/lib/llvm-10/lib
 
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
diff --git a/Makefile b/Makefile
index 50706b74..c9636971 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ DC ?= dmd
 export PYTHON_LIB_DIR ?= /usr/lib
 export DUB_CONFIGURATION ?= env
 export PYD_LIBPYTHON_DIR ?= /usr/lib
-export PYD_LIBPYTHON ?= python3.9
+export PYD_LIBPYTHON ?= $(shell python --version | awk '{print $$2}' | awk -F. '{print "python" $$1 "." $$2}')
 export PYD_D_VERSION_1 ?= Python_2_4_Or_Later
 export PYD_D_VERSION_2 ?= Python_2_5_Or_Later
 export PYD_D_VERSION_3 ?= Python_2_6_Or_Later
diff --git a/dub.selections.json b/dub.selections.json
index 486d05ab..bebf27f6 100644
--- a/dub.selections.json
+++ b/dub.selections.json
@@ -1,8 +1,8 @@
 {
 	"fileVersion": 1,
 	"versions": {
-		"mirror": "0.3.2",
-		"monty": "0.0.12",
-		"unit-threaded": "2.0.3"
+		"mirror": "0.3.3",
+		"monty": "0.0.14",
+		"unit-threaded": "2.2.0"
 	}
 }
diff --git a/examples/issues/dub.selections.json b/examples/issues/dub.selections.json
index c998c426..f59d7f9e 100644
--- a/examples/issues/dub.selections.json
+++ b/examples/issues/dub.selections.json
@@ -8,7 +8,7 @@
 		"memutils": "1.0.10",
 		"mir-linux-kernel": "1.0.1",
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"openssl": "3.3.3",
 		"openssl-static": "1.0.3+3.0.8",
 		"pyd": "0.14.4",
diff --git a/examples/numpy/dub.selections.json b/examples/numpy/dub.selections.json
index 532825f9..67621982 100644
--- a/examples/numpy/dub.selections.json
+++ b/examples/numpy/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../"},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_algorithm/dub.selections.json b/examples/phobos/std_algorithm/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_algorithm/dub.selections.json
+++ b/examples/phobos/std_algorithm/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_array/dub.selections.json b/examples/phobos/std_array/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_array/dub.selections.json
+++ b/examples/phobos/std_array/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_ascii/dub.selections.json b/examples/phobos/std_ascii/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_ascii/dub.selections.json
+++ b/examples/phobos/std_ascii/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_base64/dub.selections.json b/examples/phobos/std_base64/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_base64/dub.selections.json
+++ b/examples/phobos/std_base64/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_bigint/dub.selections.json b/examples/phobos/std_bigint/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_bigint/dub.selections.json
+++ b/examples/phobos/std_bigint/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_compiler/dub.selections.json b/examples/phobos/std_compiler/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_compiler/dub.selections.json
+++ b/examples/phobos/std_compiler/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_complex/dub.selections.json b/examples/phobos/std_complex/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_complex/dub.selections.json
+++ b/examples/phobos/std_complex/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_container/dub.selections.json b/examples/phobos/std_container/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_container/dub.selections.json
+++ b/examples/phobos/std_container/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_conv/dub.selections.json b/examples/phobos/std_conv/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_conv/dub.selections.json
+++ b/examples/phobos/std_conv/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_csv/dub.selections.json b/examples/phobos/std_csv/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_csv/dub.selections.json
+++ b/examples/phobos/std_csv/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_demangle/dub.selections.json b/examples/phobos/std_demangle/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_demangle/dub.selections.json
+++ b/examples/phobos/std_demangle/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_encoding/dub.selections.json b/examples/phobos/std_encoding/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_encoding/dub.selections.json
+++ b/examples/phobos/std_encoding/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_exception/dub.selections.json b/examples/phobos/std_exception/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_exception/dub.selections.json
+++ b/examples/phobos/std_exception/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_format/dub.selections.json b/examples/phobos/std_format/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_format/dub.selections.json
+++ b/examples/phobos/std_format/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_functional/dub.selections.json b/examples/phobos/std_functional/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_functional/dub.selections.json
+++ b/examples/phobos/std_functional/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_getopt/dub.selections.json b/examples/phobos/std_getopt/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_getopt/dub.selections.json
+++ b/examples/phobos/std_getopt/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_json/dub.selections.json b/examples/phobos/std_json/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_json/dub.selections.json
+++ b/examples/phobos/std_json/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_math/dub.selections.json b/examples/phobos/std_math/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_math/dub.selections.json
+++ b/examples/phobos/std_math/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_mathspecial/dub.selections.json b/examples/phobos/std_mathspecial/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_mathspecial/dub.selections.json
+++ b/examples/phobos/std_mathspecial/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_meta/dub.selections.json b/examples/phobos/std_meta/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_meta/dub.selections.json
+++ b/examples/phobos/std_meta/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_mmfile/dub.selections.json b/examples/phobos/std_mmfile/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_mmfile/dub.selections.json
+++ b/examples/phobos/std_mmfile/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_numeric/dub.selections.json b/examples/phobos/std_numeric/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_numeric/dub.selections.json
+++ b/examples/phobos/std_numeric/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_outbuffer/dub.selections.json b/examples/phobos/std_outbuffer/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_outbuffer/dub.selections.json
+++ b/examples/phobos/std_outbuffer/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_path/dub.selections.json b/examples/phobos/std_path/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_path/dub.selections.json
+++ b/examples/phobos/std_path/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_process/dub.selections.json b/examples/phobos/std_process/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_process/dub.selections.json
+++ b/examples/phobos/std_process/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_random/dub.selections.json b/examples/phobos/std_random/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_random/dub.selections.json
+++ b/examples/phobos/std_random/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_range/dub.selections.json b/examples/phobos/std_range/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_range/dub.selections.json
+++ b/examples/phobos/std_range/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_regex/dub.selections.json b/examples/phobos/std_regex/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_regex/dub.selections.json
+++ b/examples/phobos/std_regex/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_signals/dub.selections.json b/examples/phobos/std_signals/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_signals/dub.selections.json
+++ b/examples/phobos/std_signals/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_socket/dub.selections.json b/examples/phobos/std_socket/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_socket/dub.selections.json
+++ b/examples/phobos/std_socket/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_stdint/dub.selections.json b/examples/phobos/std_stdint/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_stdint/dub.selections.json
+++ b/examples/phobos/std_stdint/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_stdio/dub.selections.json b/examples/phobos/std_stdio/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_stdio/dub.selections.json
+++ b/examples/phobos/std_stdio/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_string/dub.selections.json b/examples/phobos/std_string/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_string/dub.selections.json
+++ b/examples/phobos/std_string/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_system/dub.selections.json b/examples/phobos/std_system/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_system/dub.selections.json
+++ b/examples/phobos/std_system/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_traits/dub.selections.json b/examples/phobos/std_traits/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_traits/dub.selections.json
+++ b/examples/phobos/std_traits/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_typecons/dub.selections.json b/examples/phobos/std_typecons/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_typecons/dub.selections.json
+++ b/examples/phobos/std_typecons/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_typetuple/dub.selections.json b/examples/phobos/std_typetuple/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_typetuple/dub.selections.json
+++ b/examples/phobos/std_typetuple/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_uri/dub.selections.json b/examples/phobos/std_uri/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_uri/dub.selections.json
+++ b/examples/phobos/std_uri/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_utf/dub.selections.json b/examples/phobos/std_utf/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_utf/dub.selections.json
+++ b/examples/phobos/std_utf/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_uuid/dub.selections.json b/examples/phobos/std_uuid/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_uuid/dub.selections.json
+++ b/examples/phobos/std_uuid/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_variant/dub.selections.json b/examples/phobos/std_variant/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_variant/dub.selections.json
+++ b/examples/phobos/std_variant/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_windows/dub.selections.json b/examples/phobos/std_windows/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_windows/dub.selections.json
+++ b/examples/phobos/std_windows/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/phobos/std_zlib/dub.selections.json b/examples/phobos/std_zlib/dub.selections.json
index 6d0f0d88..79e8afed 100644
--- a/examples/phobos/std_zlib/dub.selections.json
+++ b/examples/phobos/std_zlib/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../.."},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/pyd/dub.selections.json b/examples/pyd/dub.selections.json
index 532825f9..67621982 100644
--- a/examples/pyd/dub.selections.json
+++ b/examples/pyd/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../../"},
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"pyd": "0.14.4",
 		"unit-threaded": "2.1.9"
 	}
diff --git a/examples/simple/adder/dub.selections.json b/examples/simple/adder/dub.selections.json
index 89f0c36f..fd2ef9d9 100644
--- a/examples/simple/adder/dub.selections.json
+++ b/examples/simple/adder/dub.selections.json
@@ -6,7 +6,7 @@
 		"excel-d": "0.5.12",
 		"localimport": "1.3.0",
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"nogc": "0.5.1",
 		"pyd": "0.14.4",
 		"scriptlike": "0.10.3",
diff --git a/examples/simple/api/dub.selections.json b/examples/simple/api/dub.selections.json
index 89f0c36f..fd2ef9d9 100644
--- a/examples/simple/api/dub.selections.json
+++ b/examples/simple/api/dub.selections.json
@@ -6,7 +6,7 @@
 		"excel-d": "0.5.12",
 		"localimport": "1.3.0",
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"nogc": "0.5.1",
 		"pyd": "0.14.4",
 		"scriptlike": "0.10.3",
diff --git a/examples/simple/dub.selections.json b/examples/simple/dub.selections.json
index 98abfa8a..b1bcf335 100644
--- a/examples/simple/dub.selections.json
+++ b/examples/simple/dub.selections.json
@@ -6,7 +6,7 @@
 		"excel-d": "0.5.12",
 		"localimport": "1.3.0",
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"nogc": "0.5.1",
 		"pyd": "0.14.4",
 		"scriptlike": "0.10.3",
diff --git a/examples/simple/prefix/dub.selections.json b/examples/simple/prefix/dub.selections.json
index 89f0c36f..fd2ef9d9 100644
--- a/examples/simple/prefix/dub.selections.json
+++ b/examples/simple/prefix/dub.selections.json
@@ -6,7 +6,7 @@
 		"excel-d": "0.5.12",
 		"localimport": "1.3.0",
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"nogc": "0.5.1",
 		"pyd": "0.14.4",
 		"scriptlike": "0.10.3",
diff --git a/examples/simple/structs/dub.selections.json b/examples/simple/structs/dub.selections.json
index 89f0c36f..fd2ef9d9 100644
--- a/examples/simple/structs/dub.selections.json
+++ b/examples/simple/structs/dub.selections.json
@@ -6,7 +6,7 @@
 		"excel-d": "0.5.12",
 		"localimport": "1.3.0",
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"nogc": "0.5.1",
 		"pyd": "0.14.4",
 		"scriptlike": "0.10.3",
diff --git a/examples/simple/templates/dub.selections.json b/examples/simple/templates/dub.selections.json
index 89f0c36f..fd2ef9d9 100644
--- a/examples/simple/templates/dub.selections.json
+++ b/examples/simple/templates/dub.selections.json
@@ -6,7 +6,7 @@
 		"excel-d": "0.5.12",
 		"localimport": "1.3.0",
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"nogc": "0.5.1",
 		"pyd": "0.14.4",
 		"scriptlike": "0.10.3",
diff --git a/examples/simple/wrap_all/dub.selections.json b/examples/simple/wrap_all/dub.selections.json
index 89f0c36f..fd2ef9d9 100644
--- a/examples/simple/wrap_all/dub.selections.json
+++ b/examples/simple/wrap_all/dub.selections.json
@@ -6,7 +6,7 @@
 		"excel-d": "0.5.12",
 		"localimport": "1.3.0",
 		"mirror": "0.3.3",
-		"monty": "0.0.12",
+		"monty": "0.0.14",
 		"nogc": "0.5.1",
 		"pyd": "0.14.4",
 		"scriptlike": "0.10.3",
diff --git a/pynih/contract/dub.selections.json b/pynih/contract/dub.selections.json
index 58d4cf98..b18541bc 100644
--- a/pynih/contract/dub.selections.json
+++ b/pynih/contract/dub.selections.json
@@ -3,7 +3,7 @@
 	"versions": {
 		"autowrap": {"path":"../.."},
 		"mirror": "0.3.2",
-		"monty": "0.0.1",
+		"monty": "0.0.14",
 		"unit-threaded": "1.0.4"
 	}
 }
diff --git a/pynih/contract/source/contract/pyclass.d b/pynih/contract/source/contract/pyclass.d
index 6303f874..c4146e13 100644
--- a/pynih/contract/source/contract/pyclass.d
+++ b/pynih/contract/source/contract/pyclass.d
@@ -79,7 +79,7 @@ package PyObject* pyclass_string_list_struct(PyObject* self, PyObject *args) {
             return null;
         }
 
-        const length = PyUnicode_GetSize(item);
+        const length = PyUnicode_GetLength(item);
         auto ptr = PyBytes_AsString(unicode);
         auto str = ptr is null ? null : ptr[0 .. length];
 
diff --git a/pynih/contract/source/contract/scalars.d b/pynih/contract/source/contract/scalars.d
index 8fbe343f..2c18d1da 100644
--- a/pynih/contract/source/contract/scalars.d
+++ b/pynih/contract/source/contract/scalars.d
@@ -37,7 +37,7 @@ package PyObject* one_bool_param_to_not(PyObject* self, PyObject *args) nothrow
     if(arg is null) return null;
 
     if(!PyBool_Check(arg)) return null;
-    const dArg = arg == pyTrue;
+    const dArg = arg == Py_True;
 
     return PyBool_FromLong(!dArg);
 }
diff --git a/pynih/contract/source/contract/udt.d b/pynih/contract/source/contract/udt.d
index a3d1f625..28b60dcf 100644
--- a/pynih/contract/source/contract/udt.d
+++ b/pynih/contract/source/contract/udt.d
@@ -34,7 +34,7 @@ package PyObject* simple_struct_func(PyObject* self, PyObject *args) nothrow @no
         type.tp_name = &"MyType"[0];
         type.tp_basicsize = MyType.sizeof;
         type.tp_members = &members[0];
-        type.tp_flags = TypeFlags.Default;
+        type.tp_flags = Py_TPFLAGS_DEFAULT;
 
         if(PyType_Ready(&type) < 0) {
             PyErr_SetString(PyExc_TypeError, &"not ready"[0]);
@@ -87,7 +87,7 @@ package PyObject* twice_struct_func(PyObject* self, PyObject *args) nothrow @nog
         type.tp_name = &"Twice"[0];
         type.tp_basicsize = Twice.sizeof;
         type.tp_methods = &methods[0];
-        type.tp_flags = TypeFlags.Default;
+        type.tp_flags = Py_TPFLAGS_DEFAULT;
 
         if(PyType_Ready(&type) < 0) {
             PyErr_SetString(PyExc_TypeError, &"not ready"[0]);
@@ -224,7 +224,7 @@ package PyObject* struct_getset(PyObject* self, PyObject *args) nothrow @nogc {
 
         outerType.tp_name = &"StructGetSet"[0];
         outerType.tp_basicsize = StructGetSet.sizeof;
-        outerType.tp_flags = TypeFlags.Default;
+        outerType.tp_flags = Py_TPFLAGS_DEFAULT;
         outerType.tp_repr = outerType.tp_str = &reprOuter;
         outerType.tp_getset = &outerGetSets[0];
 
@@ -242,7 +242,7 @@ package PyObject* struct_getset(PyObject* self, PyObject *args) nothrow @nogc {
 
         innerType.tp_name = &"StructGetSet.Inner"[0];
         innerType.tp_basicsize = StructGetSet.Inner.sizeof;
-        innerType.tp_flags = TypeFlags.Default;
+        innerType.tp_flags = Py_TPFLAGS_DEFAULT;
         innerType.tp_repr = innerType.tp_str = &reprInner;
         innerType.tp_getset = &innerGetSets[0];
 
diff --git a/pynih/source/autowrap/pynih/python/conv/python_to_d.d b/pynih/source/autowrap/pynih/python/conv/python_to_d.d
index c2bc48a6..27dddbaa 100644
--- a/pynih/source/autowrap/pynih/python/conv/python_to_d.d
+++ b/pynih/source/autowrap/pynih/python/conv/python_to_d.d
@@ -233,11 +233,11 @@ T to(T)(PyObject* value) if(isArray!T && !isSomeString!T)
 
 T to(T)(PyObject* value) if(isSomeString!T) {
 
-    import python.c: PyUnicode_GetSize, PyUnicode_Check,
+    import python.c: PyUnicode_GetLength, PyUnicode_Check,
         PyBytes_AsString, PyUnicode_AsUTF8String, Py_ssize_t;
     import std.conv: to;
 
-    const length = PyUnicode_GetSize(value);
+    const length = PyUnicode_GetLength(value);
     if(length == 0) return T.init;
 
     auto str = PyUnicode_AsUTF8String(value);
@@ -253,8 +253,8 @@ T to(T)(PyObject* value) if(isSomeString!T) {
 
 
 T to(T)(PyObject* value) if(is(Unqual!T == bool)) {
-    import python.c: pyTrue;
-    return value is pyTrue;
+    import python.c: Py_True;
+    return value is Py_True;
 }
 
 
diff --git a/pynih/source/autowrap/pynih/python/cooked.d b/pynih/source/autowrap/pynih/python/cooked.d
index 21a876e1..83ee86b4 100644
--- a/pynih/source/autowrap/pynih/python/cooked.d
+++ b/pynih/source/autowrap/pynih/python/cooked.d
@@ -20,7 +20,7 @@ auto createModule(Module module_, alias cfunctions, alias aggregates = Aggregate
     static PyModuleDef moduleDef;
 
     auto pyMethodDefs = cFunctionsToPyMethodDefs!(cfunctions);
-    moduleDef = pyModuleDef(module_.name.ptr, null /*doc*/, -1 /*size*/, pyMethodDefs);
+    moduleDef = PyModuleDef(pyModuleDefHeadInit, module_.name.ptr, null /*doc*/, -1 /*size*/, pyMethodDefs);
 
     auto module_ = PyModule_Create(&moduleDef);
     addModuleTypes!(aggregates.Types)(module_);
@@ -73,20 +73,6 @@ private PyMethodDef* cFunctionsToPyMethodDefs(alias cfunctions)()
 }
 
 
-/**
-   Helper function to get around the C syntax problem with
-   PyModuleDef_HEAD_INIT - it doesn't compile in D.
-*/
-private auto pyModuleDef(A...)(auto ref A args) {
-    import std.functional: forward;
-
-    return PyModuleDef(
-        // the line below is a manual D version expansion of PyModuleDef_HEAD_INIT
-        PyModuleDef_Base(PyObject(1 /*ref count*/, null /*type*/), null /*m_init*/, 0/*m_index*/, null/*m_copy*/),
-        forward!args
-    );
-}
-
 /**
    Helper function to create PyMethodDef structs.
    The strings are compile-time parameters to avoid passing GC-allocated memory
diff --git a/pynih/source/autowrap/pynih/python/type.d b/pynih/source/autowrap/pynih/python/type.d
index c053b741..48e12cea 100644
--- a/pynih/source/autowrap/pynih/python/type.d
+++ b/pynih/source/autowrap/pynih/python/type.d
@@ -63,7 +63,7 @@ struct PythonType(T) {
 
     private static void initialise() nothrow {
         import autowrap.common: AlwaysTry;
-        import python.c: PyType_GenericNew, PyType_Ready, TypeFlags,
+        import python.c: PyType_GenericNew, PyType_Ready, Py_TPFLAGS_DEFAULT, Py_TPFLAGS_BASETYPE,
             PyErr_SetString, PyExc_TypeError,
             PyNumberMethods, PySequenceMethods;
         import mirror.meta.traits: UnaryOperators, BinaryOperators, AssignOperators, functionName;
@@ -76,9 +76,9 @@ struct PythonType(T) {
         // This allows tp_name to do its usual Python job and allows us to
         // construct a D class from its runtime Python type.
         _pyType.tp_name = fullyQualifiedName!(Unqual!T).ptr;
-        _pyType.tp_flags = TypeFlags.Default;
+        _pyType.tp_flags = Py_TPFLAGS_DEFAULT;
         static if(is(T == class) || is(T == interface))
-            _pyType.tp_flags |= TypeFlags.BaseType;
+            _pyType.tp_flags |= Py_TPFLAGS_BASETYPE;
 
         // FIXME: types are that user aggregates *and* callables
         static if(isUserAggregate!T) {
diff --git a/requirements.txt b/requirements.txt
index f5e037ac..f982921e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,22 +1,7 @@
-attrs==21.2.0
-blessings==1.7
-bpython==0.21
-certifi==2023.7.22
-chardet==4.0.0
-curtsies==0.3.5
-cwcwidth==0.1.4
-greenlet==1.1.0
-idna==3.7
-iniconfig==1.1.1
-numpy==1.22.0
-packaging==20.9
-pluggy==0.13.1
-py==1.10.0
-Pygments==2.15.0
-pyparsing==2.4.7
-pytest==6.2.4
-pyxdg==0.27
-requests==2.32.0
-six==1.16.0
-toml==0.10.2
-urllib3==1.26.18
+exceptiongroup==1.2.1
+iniconfig==2.0.0
+numpy==1.26.4
+packaging==24.0
+pluggy==1.5.0
+pytest==8.2.1
+tomli==2.0.1