diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 223a1a1..84d1dbf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -97,6 +97,8 @@ jobs:
           [
             "",
             "derive",
+            "async",
+            "derive,async",
           ]
         include:
           - target: "x86_64-unknown-linux-gnu"
@@ -121,7 +123,7 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: build
-          args: --all --target '${{ matrix.target }}' --features '${{ matrix.features }},${{ matrix.extra_features }}'
+          args: --workspace --target '${{ matrix.target }}' --features '${{ matrix.features }},${{ matrix.extra_features }}'
 
   test:
     name: Test
@@ -140,4 +142,4 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: test
-          args: --all --features std heapless
\ No newline at end of file
+          args: --workspace --features std,heapless
\ No newline at end of file