diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7266469c4a2..0eb2868d37b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -273,7 +273,9 @@ jobs:
           use-sticky-disk: "false"
 
       - name: Run changed extension tests
-        run: pnpm test:extension ${{ matrix.extension }}
+        env:
+          EXTENSION_ID: ${{ matrix.extension }}
+        run: pnpm test:extension "$EXTENSION_ID"
 
   # Types, lint, and format check.
   check: