diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9ce8a9c..2c2d139 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,34 +9,18 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
 
     steps:
       - uses: actions/checkout@v4
-      - name: Run tests (including doctests)
-        run: cargo test -F full
-      - name: Install cargo-hack
+      - name: Install tools
         uses: taiki-e/install-action@v2
         with:
-          tool: cargo-hack
-      - name: Check a few configurations
-        run: |
-          cargo hack --feature-powerset --exclude-features=default,full check
-      - name: Run examples
-        shell: bash
-        run: |
-          pushd merde
-          EXAMPLES=($(cd examples && for i in *; do echo "${i%.rs}"; done))
-          for example in "${EXAMPLES[@]}"; do
-            cargo run --features full,ahash --example "$example"
-          done
-          popd
-      - name: Test zerodeps-example
+          tool: cargo-hack,just
+      - name: Run tests
         shell: bash
         run: |
-          pushd zerodeps-example
-          cargo check
-          cargo check --features=merde
-          cargo tree --prefix none --no-dedupe | grep -v compact_str
-          cargo tree --prefix none --no-dedupe --features=merde | grep compact_str
-          popd
+          just
diff --git a/Justfile b/Justfile
index 6e67ef6..567bf4d 100644
--- a/Justfile
+++ b/Justfile
@@ -1,8 +1,13 @@
 check:
     #!/bin/bash -eux
+    cargo check --all-targets
+    cargo check --all-features --all-targets
+    cargo hack --each-feature --exclude-features=default,full check
+
     cargo check --example simple --no-default-features --features=json
     cargo run --example simple --features=core,json
-    cargo hack --each-feature --exclude-features=default,full check -p merde
+
+    # can't use cargo-nextest because we want to run doctests
     cargo test -F full
 
     pushd zerodeps-example
diff --git a/merde_time/src/lib.rs b/merde_time/src/lib.rs
index d0f89e8..a1f4f6f 100644
--- a/merde_time/src/lib.rs
+++ b/merde_time/src/lib.rs
@@ -55,8 +55,6 @@ where
 
 #[cfg(feature = "merde")]
 mod merde_impls {
-    use merde_core::CowStr;
-
     use super::*;
 
     impl merde_core::IntoStatic for Rfc3339<OffsetDateTime> {
@@ -73,7 +71,7 @@ mod merde_impls {
         where
             D: merde_core::Deserializer<'s> + ?Sized,
         {
-            let s = CowStr::deserialize(de).await?;
+            let s = merde_core::CowStr::deserialize(de).await?;
             Ok(Rfc3339(
                 time::OffsetDateTime::parse(
                     s.as_ref(),