diff --git a/.github/workflows/claude-code.yaml b/.github/workflows/claude-code.yaml
index 09aee711..2db30051 100644
--- a/.github/workflows/claude-code.yaml
+++ b/.github/workflows/claude-code.yaml
@@ -34,7 +34,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Configure AWS Credentials (OIDC)
-        uses: aws-actions/configure-aws-credentials@v6
+        uses: aws-actions/configure-aws-credentials@e6de054238d6b7531b4efff3b6587d9aade6a06c # v6.2.3
         with:
           role-to-assume: arn:aws:iam::199765120567:role/${{ github.event.repository.name }}-iam-protected
           aws-region: us-west-2
diff --git a/.github/workflows/pull_request.yaml b/.github/workflows/pull_request.yaml
index 795dc848..6025535f 100644
--- a/.github/workflows/pull_request.yaml
+++ b/.github/workflows/pull_request.yaml
@@ -58,7 +58,7 @@ jobs:
 
       - name: Check for dependency file changes
         id: filter
-        uses: dorny/paths-filter@v3
+        uses: dorny/paths-filter@0e4a8c6effa4802afeda77dc8d303f8176d7dfad # v3.0.4
         with:
           filters: |
             deps:
@@ -103,10 +103,10 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3.12.0
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8 # v6.19.2
         with:
           context: .
           push: false
diff --git a/.github/workflows/release-to-ghcr.yaml b/.github/workflows/release-to-ghcr.yaml
index 90dee7f8..55c69bac 100644
--- a/.github/workflows/release-to-ghcr.yaml
+++ b/.github/workflows/release-to-ghcr.yaml
@@ -92,17 +92,17 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3.12.0
 
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3.7.0
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push Docker image
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8 # v6.19.2
         with:
           context: .
           push: true