diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index 95f07c4..7c199e3 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -26,4 +26,10 @@ jobs:
         run: |
           cd demo/lambda/src
           docker build -t ${{ steps.login-ecr.outputs.registry }}/demo-awscd-2024:$GITHUB_SHA -f Dockerfile .
-          docker push ${{ steps.login-ecr.outputs.registry }}/demo-awscd-2024:$GITHUB_SHA
\ No newline at end of file
+          docker push ${{ steps.login-ecr.outputs.registry }}/demo-awscd-2024:$GITHUB_SHA
+
+      - name: Replace the Docker image tag with Git SHA in deploy.yaml
+        run: |
+          export GIT_SHA=$(echo $GITHUB_SHA | cut -c1-8)
+          sed -i "s/:.*/:$GIT_SHA/" demo/lambda/deployment/deploy.yaml
+