diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index b7c001e..a052606 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -40,7 +40,7 @@ jobs:
     needs: build
     steps:
       - name: Set up SSH
-        uses: webfactory/ssh-agent@v0.9.0
+        uses: webfactory/ssh-agent@dc588b651fe13675774614f8e6a936a468676387 # v0.9.0
         with:
           ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}