diff --git a/action.yml b/action.yml
index 0908fc5..ba5ed7f 100644
--- a/action.yml
+++ b/action.yml
@@ -38,7 +38,7 @@ runs:
   steps:
       - name: Build Vue
         run: |
-              if [ true ==  ${{ inputs.useyarn }} ]; then yarn install; else npm ci; fi
+              if [ true ==  ${{ inputs.useyarn }} ]; then yarn install --frozen-lockfile; else npm ci; fi
               if [ true ==  ${{ inputs.useyarn }} ]; then yarn build; else npm run build; fi
               cd dist
               if [ "none" !=  ${{ inputs.cname }} ]; then echo '${{ inputs.cname }}' > CNAME; fi