diff --git a/.github/workflows/sorbet.yml b/.github/workflows/sorbet.yml
index f7ba099640..68f13c2b1e 100644
--- a/.github/workflows/sorbet.yml
+++ b/.github/workflows/sorbet.yml
@@ -46,7 +46,7 @@ jobs:
           git fetch origin
 
           BRANCH="sorbet-files-update"
-          echo "branch=${BRANCH}" >> $GITHUB_OUTPUT
+          echo "branch=${BRANCH}" >> "$GITHUB_OUTPUT"
 
           if git ls-remote --exit-code --heads origin "${BRANCH}"
           then
@@ -79,11 +79,11 @@ jobs:
                          -m "Autogenerated by the [sorbet](https://github.com/Homebrew/brew/blob/master/.github/workflows/sorbet.yml) workflow."
             fi
 
-            echo "committed=true" >> $GITHUB_OUTPUT
+            echo "committed=true" >> "$GITHUB_OUTPUT"
             PULL_REQUEST_STATE="$(gh pr view --json=state | jq -r ".state")"
             if [[ "${PULL_REQUEST_STATE}" != "OPEN" ]]
             then
-              echo "pull_request=true" >> $GITHUB_OUTPUT
+              echo "pull_request=true" >> "$GITHUB_OUTPUT"
             fi
           fi