diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a1353f60..755a7bfd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -203,6 +203,12 @@ jobs:
           args: cargo-hack
 
       - name: doc tests
+        if: matrix.target.os != "ubuntu-latest"
         uses: actions-rs/cargo@v1
         timeout-minutes: 40
         with: { command: ci-doctest }
+
+      - name: doc tests io-uring
+        if: matrix.target.os == 'ubuntu-latest'
+        run: |
+          sudo bash -c "ulimit -Sl 512 && ulimit -Hl 512 && PATH=$PATH:/usr/share/rust/.cargo/bin && RUSTUP_TOOLCHAIN=${{ matrix.version }} cargo ci-test && RUSTUP_TOOLCHAIN=${{ matrix.version }} cargo ci-test-rt-linux && RUSTUP_TOOLCHAIN=${{ matrix.version }} cargo ci-docktest"