diff --git a/pyproject.toml b/pyproject.toml
index 289b9a0..56016cc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -46,7 +46,8 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
 ]
 dependencies = [
-    "holidays>=0.16",
+    "holidays>=0.16,<0.28;python_version<'3.8'",
+    "holidays>=0.16;python_version>='3.8'",
     "pytz>=2022.7.1",
     "python-dateutil",
 ]
diff --git a/requirements.txt b/requirements.txt
index af4603d..6986560 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,15 +2,16 @@
 # This file is autogenerated by pip-compile with Python 3.11
 # by the following command:
 #
-#    pip-compile requirements.in
+#    pip-compile '.\requirements.in'
 #
-holidays==0.27.1
-    # via -r requirements.in
+holidays<0.28 ; python_version < "3.8"
+holidays>=0.28 ; python_version >= "3.8"
+    # via -r .\requirements.in
 python-dateutil==2.8.2
     # via
-    #   -r requirements.in
+    #   -r .\requirements.in
     #   holidays
 pytz==2023.3
-    # via -r requirements.in
+    # via -r .\requirements.in
 six==1.16.0
     # via python-dateutil