diff --git a/.github/workflows/build-release.yml b/.github/workflows/build-release.yml
index 0423558d6e..08326cb52a 100644
--- a/.github/workflows/build-release.yml
+++ b/.github/workflows/build-release.yml
@@ -61,7 +61,7 @@ jobs:
 
       - name: Update README.md
         run: |
-          sed -i "s/releases\/download\/.*\/ic-reactor-core.min.js/releases\/download\/v${{ env.CORE_VERSION }}\/ic-reactor-core.min.js/" ./packages/core/README.md
+          sed -i '' "s/releases\/download\/.*\/ic-reactor-core.min.js/releases\/download\/v${CORE_VERSION}\/ic-reactor-core.min.js/" ./packages/core/README.md
 
       - name: Add & Commit
         uses: EndBug/add-and-commit@v9