diff --git a/.github/workflows/test-spec.yml b/.github/workflows/test-spec.yml
index ae0e869..4e01049 100644
--- a/.github/workflows/test-spec.yml
+++ b/.github/workflows/test-spec.yml
@@ -35,7 +35,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: swift-actions/setup-swift@v1
       with:
-        swift-version: ${{ github.event.inputs.swift-version }}
+        swift-version: '${{ github.event.inputs.swift-version }}'
     - name: Get swift version
       run: swift --version
     - name: Build