diff --git a/.github/workflows/build_deploy.yml b/.github/workflows/build_deploy.yml
index 991ad84..f4fb0ab 100644
--- a/.github/workflows/build_deploy.yml
+++ b/.github/workflows/build_deploy.yml
@@ -24,7 +24,7 @@ jobs:
         with:
           fetch-depth: 0 # needed for tags for dunamai
       - name: Install uv
-        uses: astral-sh/setup-uv@v10.3.0
+        uses: astral-sh/setup-uv@1c37ad07a6a961277cf70c0d37d6f313000f5884 # v10.3.0
         with:
           enable-cache: true
           python-version: "3.10"
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 8f22f0c..35af95a 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -32,12 +32,12 @@ jobs:
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v4
+        uses: github/codeql-action/init@24c54180a607b1449ed407dd24f251e4e9147c8d # v4
         with:
           languages: ${{ matrix.language }}
           build-mode: ${{ matrix.build-mode }}
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v4
+        uses: github/codeql-action/analyze@24c54180a607b1449ed407dd24f251e4e9147c8d # v4
         with:
           category: "/language:${{ matrix.language }}"
diff --git a/.github/workflows/experimental.yml b/.github/workflows/experimental.yml
index 1867345..dfd4fe6 100644
--- a/.github/workflows/experimental.yml
+++ b/.github/workflows/experimental.yml
@@ -31,7 +31,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Install uv
-        uses: astral-sh/setup-uv@v10.3.0
+        uses: astral-sh/setup-uv@1c37ad07a6a961277cf70c0d37d6f313000f5884 # v10.3.0
         with:
           enable-cache: true
           python-version: ${{ matrix.python-version }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 42a7450..8735f55 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -45,7 +45,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Install uv
-        uses: astral-sh/setup-uv@v10.3.0
+        uses: astral-sh/setup-uv@1c37ad07a6a961277cf70c0d37d6f313000f5884 # v10.3.0
         with:
           enable-cache: true
           python-version: ${{ matrix.python-version }}