diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 490fff4f..8ebf0f94 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -23,7 +23,7 @@ jobs:
     steps:
       - uses: actions/checkout@v7
       - run: echo "${{ matrix.python-version }}" > .python-version
-      - uses: jdx/mise-action@v4
+      - uses: jdx/mise-action@v4.2.3
       - run: ./build_and_test.sh
         shell: bash
       - name: Publish Test Report
diff --git a/.github/workflows/test_minimum_dependency_versions.yml b/.github/workflows/test_minimum_dependency_versions.yml
index aed8fb02..b9f894f1 100644
--- a/.github/workflows/test_minimum_dependency_versions.yml
+++ b/.github/workflows/test_minimum_dependency_versions.yml
@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@v7
       - run: echo "${{ matrix.python-version }}" > .python-version
-      - uses: jdx/mise-action@v4
+      - uses: jdx/mise-action@v4.2.3
       - run: mise install  # retry for network issues
       - run: mise pip-install || mise pip-install  # retry for network issues
       - run: python pin_requirements_to_minimum_acceptable_version.py
diff --git a/.github/workflows/tidy_code_and_update_markdown_snippets.yml b/.github/workflows/tidy_code_and_update_markdown_snippets.yml
index 9f039590..afb221f9 100644
--- a/.github/workflows/tidy_code_and_update_markdown_snippets.yml
+++ b/.github/workflows/tidy_code_and_update_markdown_snippets.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v7
-    - uses: jdx/mise-action@v4
+    - uses: jdx/mise-action@v4.2.3
     - run: mise install  # retry for network issues
     - run: mise pip-install || mise pip-install  # retry for network issues
     - run: ./tidy_code.sh