diff --git a/.github/workflows/publish-extension.yml b/.github/workflows/publish-extension.yml
index 655af03..2311959 100644
--- a/.github/workflows/publish-extension.yml
+++ b/.github/workflows/publish-extension.yml
@@ -28,15 +28,39 @@ jobs:
         working-directory: packages/devtools-extension
         run: cd dist && zip -r ../extension-chrome.zip .
 
-      - name: Upload to Chrome Web Store
-        uses: mnao305/chrome-extension-upload@4008e29e13c144d0f6725462cbd49b7c291b4928 # v5.0.0
-        with:
-          file-path: packages/devtools-extension/extension-chrome.zip
-          extension-id: ${{ secrets.CHROME_EXTENSION_ID }}
-          client-id: ${{ secrets.CHROME_CLIENT_ID }}
-          client-secret: ${{ secrets.CHROME_CLIENT_SECRET }}
-          refresh-token: ${{ secrets.CHROME_REFRESH_TOKEN }}
-          publish: true
+      - name: Upload and publish to Chrome Web Store
+        env:
+          EXTENSION_ID: ${{ secrets.CHROME_EXTENSION_ID }}
+          CLIENT_ID: ${{ secrets.CHROME_CLIENT_ID }}
+          CLIENT_SECRET: ${{ secrets.CHROME_CLIENT_SECRET }}
+          REFRESH_TOKEN: ${{ secrets.CHROME_REFRESH_TOKEN }}
+        run: |
+          # Get access token
+          TOKEN=$(curl -s -X POST https://oauth2.googleapis.com/token \
+            -d "client_id=$CLIENT_ID" \
+            -d "client_secret=$CLIENT_SECRET" \
+            -d "refresh_token=$REFRESH_TOKEN" \
+            -d "grant_type=refresh_token" | jq -r '.access_token')
+
+          # Upload
+          UPLOAD=$(curl -s \
+            -H "Authorization: Bearer $TOKEN" \
+            -H "x-goog-api-version: 2" \
+            -X PUT \
+            -T packages/devtools-extension/extension-chrome.zip \
+            "https://www.googleapis.com/upload/chromewebstore/v1.1/items/$EXTENSION_ID")
+          echo "Upload response: $UPLOAD"
+          echo "$UPLOAD" | jq -e '.uploadState == "SUCCESS"' || exit 1
+
+          # Publish to default (public)
+          PUBLISH=$(curl -s \
+            -H "Authorization: Bearer $TOKEN" \
+            -H "x-goog-api-version: 2" \
+            -H "Content-Length: 0" \
+            -X POST \
+            "https://www.googleapis.com/chromewebstore/v1.1/items/$EXTENSION_ID/publish")
+          echo "Publish response: $PUBLISH"
+          echo "$PUBLISH" | jq -e '.status[0] == "OK"' || { echo "::error::Publish failed — see response above"; exit 1; }
 
   publish-firefox:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 4f0f456..ee87fd4 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -54,15 +54,38 @@ jobs:
 
       - name: Publish Chrome extension to testers
         if: inputs.extension
-        uses: mnao305/chrome-extension-upload@4008e29e13c144d0f6725462cbd49b7c291b4928 # v5.0.0
-        with:
-          file-path: packages/devtools-extension/extension-chrome.zip
-          extension-id: ${{ secrets.CHROME_EXTENSION_ID }}
-          client-id: ${{ secrets.CHROME_CLIENT_ID }}
-          client-secret: ${{ secrets.CHROME_CLIENT_SECRET }}
-          refresh-token: ${{ secrets.CHROME_REFRESH_TOKEN }}
-          publish: true
-          publish-target: trustedTesters
+        env:
+          EXTENSION_ID: ${{ secrets.CHROME_EXTENSION_ID }}
+          CLIENT_ID: ${{ secrets.CHROME_CLIENT_ID }}
+          CLIENT_SECRET: ${{ secrets.CHROME_CLIENT_SECRET }}
+          REFRESH_TOKEN: ${{ secrets.CHROME_REFRESH_TOKEN }}
+        run: |
+          # Get access token
+          TOKEN=$(curl -s -X POST https://oauth2.googleapis.com/token \
+            -d "client_id=$CLIENT_ID" \
+            -d "client_secret=$CLIENT_SECRET" \
+            -d "refresh_token=$REFRESH_TOKEN" \
+            -d "grant_type=refresh_token" | jq -r '.access_token')
+
+          # Upload
+          UPLOAD=$(curl -s \
+            -H "Authorization: Bearer $TOKEN" \
+            -H "x-goog-api-version: 2" \
+            -X PUT \
+            -T packages/devtools-extension/extension-chrome.zip \
+            "https://www.googleapis.com/upload/chromewebstore/v1.1/items/$EXTENSION_ID")
+          echo "Upload response: $UPLOAD"
+          echo "$UPLOAD" | jq -e '.uploadState == "SUCCESS"' || exit 1
+
+          # Publish to trusted testers
+          PUBLISH=$(curl -s \
+            -H "Authorization: Bearer $TOKEN" \
+            -H "x-goog-api-version: 2" \
+            -H "Content-Length: 0" \
+            -X POST \
+            "https://www.googleapis.com/chromewebstore/v1.1/items/$EXTENSION_ID/publish?publishTarget=trustedTesters")
+          echo "Publish response: $PUBLISH"
+          echo "$PUBLISH" | jq -e '.status[0] == "OK"' || { echo "::error::Publish failed — see response above"; exit 1; }
 
       - name: Build Firefox extension
         if: inputs.extension