diff --git a/.github/workflows/browserstack.yml b/.github/workflows/browserstack.yml
index 68c74f9..2234e0c 100644
--- a/.github/workflows/browserstack.yml
+++ b/.github/workflows/browserstack.yml
@@ -1,6 +1,10 @@
 name: Browserstack
 
-on: [push, pull_request]
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
 jobs:
   test-browsers-compatibility:
     name: Browsers (older, on Browserstack)
diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index 645da09..e1becb8 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -1,13 +1,17 @@
 name: Node CI
 
-on: [push, pull_request]
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
 jobs:
   test:
     name: v${{ matrix.node }} @ ubuntu-latest
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [18, 20]
+        node: [16, 18, 20]
     steps:
     - uses: actions/checkout@v3
     - name: Use Node.js ${{ matrix.node }}