diff --git a/cmake/extensions/CMakeLists.txt b/cmake/extensions/CMakeLists.txt
index 42e514f..298c484 100644
--- a/cmake/extensions/CMakeLists.txt
+++ b/cmake/extensions/CMakeLists.txt
@@ -95,6 +95,7 @@ if(PY_VERSION VERSION_GREATER_EQUAL "3.12")
             _testcapi/heaptype_relative.c
             _testcapi/pyos.c
             _testcapi/pytime.c
+            _testcapi/sys.c
             _testcapi/vectorcall_limited.c
         )
     else()
@@ -128,7 +129,6 @@ if(PY_VERSION VERSION_GREATER_EQUAL "3.12")
         _testcapi/numbers.c
         _testcapi/set.c
         _testcapi/structmember.c
-        _testcapi/sys.c
         _testcapi/tuple.c
         _testcapi/unicode.c
         _testcapi/vectorcall.c
diff --git a/cmake/libpython/CMakeLists.txt b/cmake/libpython/CMakeLists.txt
index 5611793..d9c1aca 100644
--- a/cmake/libpython/CMakeLists.txt
+++ b/cmake/libpython/CMakeLists.txt
@@ -953,12 +953,16 @@ elseif(UNIX)
     )
 endif()
 if(PY_VERSION VERSION_GREATER_EQUAL "3.12")
+    if(PY_VERSION VERSION_LESS "3.13")
+        list(APPEND LIBPYTHON_SOURCES
+            ${SRC_DIR}/Modules/_xxinterpchannelsmodule.c
+        )
+    endif()
     list(APPEND LIBPYTHON_SOURCES
         ${SRC_DIR}/Modules/_hacl/Hacl_Hash_MD5.c
         ${SRC_DIR}/Modules/_hacl/Hacl_Hash_SHA1.c
         ${SRC_DIR}/Modules/_hacl/Hacl_Hash_SHA2.c
         ${SRC_DIR}/Modules/_hacl/Hacl_Hash_SHA3.c
-        ${SRC_DIR}/Modules/_xxinterpchannelsmodule.c
         ${SRC_DIR}/Modules/md5module.c
         ${SRC_DIR}/Modules/sha1module.c
         ${SRC_DIR}/Modules/sha2module.c