diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 56cab99..dd2d621 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -16,6 +16,10 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
         node-version: [14.x, 16.x, 18.x, 20.x]
+        exclude:
+          # Node 14 is not supported on macOS arm64
+          - os: macos-latest
+            node-version: 14.x
       fail-fast: false
 
     runs-on: ${{ matrix.os }}
diff --git a/package.json b/package.json
index c488e88..a864d7a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,7 @@
 {
   "private": true,
   "name": "proxy-agent-monorepo",
+  "packageManager": "pnpm@7.32.2",
   "scripts": {
     "build": "turbo run build",
     "lint": "turbo run lint",