diff --git a/.github/workflows/build-and-push-bskyweb-aws.yaml b/.github/workflows/build-and-push-bskyweb-aws.yaml
index 06b4d768ca..10763cf942 100644
--- a/.github/workflows/build-and-push-bskyweb-aws.yaml
+++ b/.github/workflows/build-and-push-bskyweb-aws.yaml
@@ -46,7 +46,7 @@ jobs:
 
       - name: Add bundle date to GitHub output
         id: bundle-date
-        run: echo "BUNDLE_DATE=$(date -u +"%y%m%d%H")" >> $GITHUB_ENV
+        run: echo bundle-date=$(date -u +"%y%m%d%H") >> $GITHUB_ENV
 
       - name: Build and push Docker image
         id: build-and-push
@@ -61,4 +61,4 @@ jobs:
           cache-to: type=gha,mode=max
           build-args: |
             EXPO_PUBLIC_BUNDLE_IDENTIFIER=${{ github.sha }}
-            EXPO_PUBLIC_BUNDLE_DATE=${{ steps.bundle-date.outputs.BUNDLE_DATE }}
+            EXPO_PUBLIC_BUNDLE_DATE=${{ steps.bundle-date.outputs.bundle-date }}