diff --git a/.github/workflows/system-testing.yml b/.github/workflows/system-testing.yml
index b779b43e..57da3cb4 100644
--- a/.github/workflows/system-testing.yml
+++ b/.github/workflows/system-testing.yml
@@ -30,7 +30,7 @@ jobs:
         id: vars
         run: |
           # replace with version from Dockerfile when fixed
-          echo "NGINX_VERSION=1.27.0" >> $GITHUB_ENV
+          echo "NGINX_VERSION=1.27.0" >> $GITHUB_OUTPUT
 
       - name: Setup Python
         uses: actions/setup-python@v5