diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 05e4077..1d9771d 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -24,30 +24,26 @@ jobs:
     - name: Check package.json version change
       id: check_version
       run: |
-        VERSION_IN_GIT=$(git diff HEAD~ -- package.json | grep -oP '(?<="version": ")[^"]*' || :)
-        if [ -z "$VERSION_IN_GIT" ]; then
-          echo "Unable to find previous version info or no previous commit."
-          VERSION_IN_GIT="None"
-        fi
+        VERSION_IN_GIT=$(git diff HEAD~ -- package.json | grep -oP '(?<="version": ")[^"]*' || echo "not_found")
         CURRENT_VERSION=$(node -p "require('./package.json').version")
-        if [ "$VERSION_IN_GIT" == "$CURRENT_VERSION" ]; then
-          echo "Version has not changed."
-          echo "::set-output name=version_changed::false"
+        if [ "$VERSION_IN_GIT" == "$CURRENT_VERSION" ] || [ "$VERSION_IN_GIT" == "not_found" ]; then
+          echo "Version has not changed or unable to find previous version info."
+          echo "version_changed=false" >> $GITHUB_ENV
         else
           echo "Version has changed."
-          echo "::set-output name=version_changed::true"
+          echo "version_changed=true" >> $GITHUB_ENV
         fi
 
     - name: Install dependencies
-      if: steps.check_version.outputs.version_changed == 'true'
+      if: env.version_changed == 'true'
       run: yarn install
 
     - name: Build package
-      if: steps.check_version.outputs.version_changed == 'true'
+      if: env.version_changed == 'true'
       run: yarn build
 
     - name: Publish to NPM
-      if: steps.check_version.outputs.version_changed == 'true'
+      if: env.version_changed == 'true'
       run: npm publish
       env:
         NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
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