diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 05f291d4..6652aad7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -115,6 +115,7 @@ jobs:
       - run: cd serde && cargo check --no-default-features
       - run: cd serde && cargo check
       - run: cd serde_derive && cargo check
+      - run: cd precompiled/serde_derive && cargo check
 
   alloc:
     name: Rust 1.36.0
@@ -125,6 +126,15 @@ jobs:
       - uses: dtolnay/rust-toolchain@1.36.0
       - run: cd serde && cargo build --no-default-features --features alloc
 
+  macos:
+    name: macOS
+    runs-on: macos-latest
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@stable
+      - run: cd precompiled/serde_derive && cargo check
+
   minimal:
     name: Minimal versions
     runs-on: ubuntu-latest