diff --git a/.github/workflows/codeql-actions.yml b/.github/workflows/codeql-actions.yml
index fc511334c..0304c03ab 100644
--- a/.github/workflows/codeql-actions.yml
+++ b/.github/workflows/codeql-actions.yml
@@ -37,7 +37,7 @@ jobs:
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v3
+      uses: github/codeql-action/init@28deaeda66b76a05916b6923827895f2b14ab387 # v3
       with:
         languages: actions
         build-mode: none
@@ -45,6 +45,6 @@ jobs:
         queries: security-extended
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v3
+      uses: github/codeql-action/analyze@28deaeda66b76a05916b6923827895f2b14ab387 # v3
       with:
         category: "/language:actions"
diff --git a/.github/workflows/codeql-python.yml b/.github/workflows/codeql-python.yml
index 2453b94f5..3970a00fc 100644
--- a/.github/workflows/codeql-python.yml
+++ b/.github/workflows/codeql-python.yml
@@ -42,7 +42,7 @@ jobs:
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v3
+      uses: github/codeql-action/init@28deaeda66b76a05916b6923827895f2b14ab387 # v3
       with:
         languages: python
         build-mode: none
@@ -61,6 +61,6 @@ jobs:
         pip install dist/*.whl
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v3
+      uses: github/codeql-action/analyze@28deaeda66b76a05916b6923827895f2b14ab387 # v3
       with:
         category: "/language:python"
diff --git a/.github/workflows/release-python.yml b/.github/workflows/release-python.yml
index 0e650e6ee..f87c3ccd2 100644
--- a/.github/workflows/release-python.yml
+++ b/.github/workflows/release-python.yml
@@ -87,14 +87,14 @@ jobs:
           name: all-dist-${{ github.run_id }}
           path: dist/
       - name: Publish package distributions to TestPyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
+        uses: pypa/gh-action-pypi-publish@76f52bc884231f62b9a034ebfe128415bbaabdfc # release/v1
         with:
           repository-url: https://test.pypi.org/legacy/
           skip-existing: true
           attestations: ${{ env.DRY_RUN }}
       - name: Publish package distributions to PyPI
         if: startsWith(env.DRY_RUN, 'false')
-        uses: pypa/gh-action-pypi-publish@release/v1
+        uses: pypa/gh-action-pypi-publish@76f52bc884231f62b9a034ebfe128415bbaabdfc # release/v1
 
   post-publish:
     needs: [publish]
diff --git a/.github/workflows/zizmor.yml b/.github/workflows/zizmor.yml
index 36c084aa0..84a6484ba 100644
--- a/.github/workflows/zizmor.yml
+++ b/.github/workflows/zizmor.yml
@@ -19,7 +19,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Setup Rust
-        uses: actions-rust-lang/setup-rust-toolchain@v1
+        uses: actions-rust-lang/setup-rust-toolchain@9d7e65c320fdb52dcd45ffaa68deb6c02c8754d9 # v1
       - name: Get zizmor
         run: cargo install zizmor
       - name: Run zizmor
@@ -27,7 +27,7 @@ jobs:
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Upload SARIF file
-        uses: github/codeql-action/upload-sarif@v3
+        uses: github/codeql-action/upload-sarif@28deaeda66b76a05916b6923827895f2b14ab387 # v3
         with:
           sarif_file: results.sarif
           category: zizmor