diff --git a/.github/workflows/library_codegen.yml b/.github/workflows/library_codegen.yml
index 7ddeef6572..5f72c7c7e7 100644
--- a/.github/workflows/library_codegen.yml
+++ b/.github/workflows/library_codegen.yml
@@ -71,7 +71,7 @@ jobs:
         uses: ./.github/actions/install_smithy_dafny_codegen_dependencies
 
       - name: Setup Python, black, and docformatter for code formatting
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
           architecture: x64
diff --git a/.github/workflows/library_interop_tests.yml b/.github/workflows/library_interop_tests.yml
index c02fc0822d..e7f3e5b000 100644
--- a/.github/workflows/library_interop_tests.yml
+++ b/.github/workflows/library_interop_tests.yml
@@ -58,7 +58,7 @@ jobs:
           java-version: 17
 
       - name: Setup Python for running tests
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: 3.11
           architecture: x64
@@ -187,7 +187,7 @@ jobs:
           java-version: 17
 
       - name: Setup Python for running tests
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: 3.11
           architecture: x64
diff --git a/.github/workflows/library_python_tests.yml b/.github/workflows/library_python_tests.yml
index 8a09597384..2e272ef3c0 100644
--- a/.github/workflows/library_python_tests.yml
+++ b/.github/workflows/library_python_tests.yml
@@ -69,7 +69,7 @@ jobs:
           dafny-version: ${{ inputs.dafny }}
 
       - name: Setup Python ${{ matrix.python-version }} for running tests
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
           architecture: x64