diff --git a/.github/workflows/build-commits.yaml b/.github/workflows/build-commits.yaml
index 4eb2f3d..fd439f9 100644
--- a/.github/workflows/build-commits.yaml
+++ b/.github/workflows/build-commits.yaml
@@ -22,7 +22,7 @@ jobs:
 
       - name: Build site
         env:
-          BASE_URL: ${{ steps.pages.outputs.base_url }}
+          BASE_URL: "${{ steps.pages.outputs.base_url }}"
         run: npm run build
 
       - name: Run tests
diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index 5e171b7..a08e7c0 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -38,7 +38,7 @@ jobs:
 
       - name: Build site
         env:
-          BASE_URL: ${{ steps.pages.outputs.base_url }}
+          BASE_URL: "${{ steps.pages.outputs.base_url }}"
         run: npm run build
 
       - name: Upload artifact