diff --git a/.github/workflows/ci_cd.yml b/.github/workflows/ci_cd.yml
index e288bb13a76..108c13cd074 100644
--- a/.github/workflows/ci_cd.yml
+++ b/.github/workflows/ci_cd.yml
@@ -33,7 +33,7 @@ jobs:
       contents: write
       pull-requests: write
     steps:
-      - uses: ansys/actions/doc-deploy-changelog@v9
+      - uses: ansys/actions/doc-deploy-changelog@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
         with:
           token: ${{ secrets.PYANSYS_CI_BOT_TOKEN }}
           bot-user: ${{ secrets.PYANSYS_CI_BOT_USERNAME }}
@@ -44,7 +44,7 @@ jobs:
     name: "Vulnerabilities"
     runs-on: ubuntu-latest
     steps:
-      - uses: ansys/actions/check-vulnerabilities@v9
+      - uses: ansys/actions/check-vulnerabilities@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
         with:
           python-version: ${{ env.MAIN_PYTHON_VERSION }}
           python-package-name: ${{ env.PACKAGE_NAME }}
@@ -89,7 +89,7 @@ jobs:
     steps:
       - name: Check the title of the pull request
         if: github.event_name == 'pull_request'
-        uses: ansys/actions/check-pr-title@v9
+        uses: ansys/actions/check-pr-title@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           use-upper-case: true
@@ -104,7 +104,7 @@ jobs:
     needs: [pr-title]
     steps:
       - name: Check documentation style
-        uses: ansys/actions/doc-style@v9
+        uses: ansys/actions/doc-style@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           fail-level: 'warning'
@@ -115,7 +115,7 @@ jobs:
     needs: [doc-style]
     steps:
       - name: Documentation build
-        uses: ansys/actions/doc-build@v9
+        uses: ansys/actions/doc-style@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
         with:
           dependencies: "graphviz texlive-latex-extra latexmk texlive-xetex texlive-fonts-extra"
           python-version: ${{ env.MAIN_PYTHON_VERSION }}
@@ -138,7 +138,7 @@ jobs:
         python-version: ['3.10', '3.11', '3.12', '3.13']
     steps:
       - name: Build wheelhouse and perform smoke test
-        uses: ansys/actions/build-wheelhouse@v9
+        uses: ansys/actions/build-wheelhouse@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
         with:
           library-name: ${{ env.PACKAGE_NAME }}
           operating-system: ${{ matrix.os }}
@@ -155,7 +155,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Run unit tests
-        uses: ansys/actions/tests-pytest@v9
+        uses: ansys/actions/tests-pytest@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
         with:
           pytest-postargs: 'tests/unit'
           pytest-extra-args: ${{ env.PYTEST_ARGUMENTS }}
@@ -182,7 +182,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Run integration tests
-        uses: ansys/actions/tests-pytest@v9
+        uses: ansys/actions/tests-pytest@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
         with:
           pytest-postargs: 'tests/integration'
           pytest-extra-args: ${{ env.PYTEST_ARGUMENTS }}
@@ -593,7 +593,7 @@ jobs:
       id-token: write
     steps:
       - name: Build library source and wheel artifacts
-        uses: ansys/actions/build-library@v9
+        uses: ansys/actions/build-library@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
         with:
           library-name: ${{ env.PACKAGE_NAME }}
           python-version: ${{ env.MAIN_PYTHON_VERSION }}
@@ -626,7 +626,7 @@ jobs:
           skip-existing: false
 
       - name: Release to GitHub
-        uses: ansys/actions/release-github@v9
+        uses: ansys/actions/release-github@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
         with:
           library-name: ${{ env.PACKAGE_NAME }}
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -640,7 +640,7 @@ jobs:
     needs: [release]
     steps:
       - name: Deploy the stable documentation
-        uses: ansys/actions/doc-deploy-stable@v9
+        uses: ansys/actions/doc-deploy-stable@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
         with:
           cname: ${{ env.DOCUMENTATION_CNAME }}
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/label.yml b/.github/workflows/label.yml
index 63e61df4bda..97e85ed5c2f 100644
--- a/.github/workflows/label.yml
+++ b/.github/workflows/label.yml
@@ -102,7 +102,7 @@ jobs:
       pull-requests: write
     runs-on: ubuntu-latest
     steps:
-    - uses: ansys/actions/doc-changelog@v9
+    - uses: ansys/actions/doc-changelog@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
       with:
         token: ${{ secrets.PYANSYS_CI_BOT_TOKEN }}
         use-conventional-commits: true
diff --git a/.github/workflows/nightly-docs.yml b/.github/workflows/nightly-docs.yml
index 234cd03061b..d911b01c8cf 100644
--- a/.github/workflows/nightly-docs.yml
+++ b/.github/workflows/nightly-docs.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Documentation build
-        uses: ansys/actions/doc-build@v9
+        uses: ansys/actions/doc-build@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
         with:
           dependencies: "graphviz texlive-latex-extra latexmk texlive-xetex texlive-fonts-extra"
           python-version: ${{ env.MAIN_PYTHON_VERSION }}
@@ -35,7 +35,7 @@ jobs:
     needs: doc-build
     steps:
       - name: Upload development documentation
-        uses: ansys/actions/doc-deploy-dev@v9
+        uses: ansys/actions/doc-deploy-dev@2cf9a9c43235a000d613c2b13e64c954232a4553 # v9.0.9
         with:
           cname: ${{ env.DOCUMENTATION_CNAME }}
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/doc/changelog.d/6148.maintenance.md b/doc/changelog.d/6148.maintenance.md
new file mode 100644
index 00000000000..81a8cfd39ea
--- /dev/null
+++ b/doc/changelog.d/6148.maintenance.md
@@ -0,0 +1 @@
+Pin ansys/actions to the latest stable release
\ No newline at end of file