diff --git a/.github/workflows/fly-deploy.yaml b/.github/workflows/fly-deploy.yaml
index 8c324eb..429e0cb 100644
--- a/.github/workflows/fly-deploy.yaml
+++ b/.github/workflows/fly-deploy.yaml
@@ -17,7 +17,7 @@ jobs:
     name: Deploy app
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
       - uses: superfly/flyctl-actions/setup-flyctl@master
         with:
           version: 0.1.54