diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index d07d3dc..999099f 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -31,7 +31,9 @@ jobs:
         run: npm ci
 
       - name: Build
-        run: npm run build -- --define SimApiVersion="'${{github.ref_name}}'"
+        env:
+          SimApiVersion: ${{ github.ref_name }}
+        run: npm run build
 
       - name: Publish to npm
         run: npm publish --access public
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