diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c04bad6c08d..cb296f008fd 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -195,9 +195,9 @@ jobs:
         id: determine-docker-package
         run: |
           if [ ${{ steps.semver.outputs.minor }} -ge 8 ]; then
-            json_output={"package":/["dbt-core"]}
+            json_output={\"package":\["dbt-core"]}
           else
-            json_output={"package":/["dbt-core",/"dbt-postgres"]}
+            json_output={\"package":\["dbt-core",\"dbt-postgres"]}
           fi
           echo "matrix=$json_output" >> $GITHUB_OUTPUT