diff --git a/.github/workflows/test-backend.yml b/.github/workflows/test-backend.yml
index fe8546cdf..f79315296 100644
--- a/.github/workflows/test-backend.yml
+++ b/.github/workflows/test-backend.yml
@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        node: [18, 20.10]
+        node: [18, "20.10"]
       fail-fast: false
 
     steps: