diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2c2a941..2f4468c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -48,11 +48,11 @@ jobs:
       if: matrix.thing == 'aarch64-linux'
       shell: bash
     - run: rustup target add ${{ matrix.target }}
-    - name: Build (Lua 5.3/5.2/5.1 and LuaJIT vendored)
+    - name: Build (Lua 5.3/5.2/5.1 and LuaJIT vendored+async)
       run: |
         for FEATURE in lua53 lua52 lua51 luajit; do
           echo "Building $FEATURE"
-          cargo build --target ${{ matrix.target }} --release --no-default-features --features "$FEATURE vendored"
+          cargo build --target ${{ matrix.target }} --release --no-default-features --features "$FEATURE vendored async"
         done
       shell: bash
     - name: Build (Lua 5.3/5.2/5.1 and LuaJIT via pkg-config)
@@ -76,15 +76,24 @@ jobs:
     - name: Run tests (Lua 5.3 vendored)
       run: cargo test --release --no-default-features --features "lua53 vendored"
       shell: bash
+    - name: Run tests (Lua 5.3 vendored+async)
+      run: cargo test --release --no-default-features --features "lua53 vendored async"
+      shell: bash
     - name: Run tests (Lua 5.2 vendored)
       run: cargo test --release --no-default-features --features "lua52 vendored"
       shell: bash
     - name: Run tests (Lua 5.1 vendored)
       run: cargo test --release --no-default-features --features "lua51 vendored"
       shell: bash
+    - name: Run tests (Lua 5.1 vendored+async)
+      run: cargo test --release --no-default-features --features "lua51 vendored async"
+      shell: bash
     - name: Run tests (LuaJIT vendored)
       run: cargo test --release --no-default-features --features "luajit vendored"
       shell: bash
+    - name: Run tests (LuaJIT vendored+async)
+      run: cargo test --release --no-default-features --features "luajit vendored async"
+      shell: bash
     - name: Run compile test (Lua 5.3)
       run: |
         sudo apt-get update -y