diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 15924605..0533b8af 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -198,4 +198,4 @@ jobs:
 
       - name: doc tests io-uring
         run: |
-          sudo bash -c "ulimit -Sl 512 && ulimit -Hl 512 && PATH=$PATH:/usr/share/rust/.cargo/bin && RUSTUP_TOOLCHAIN=${{ matrix.version }} cargo ci-doctest"
+          sudo bash -c "ulimit -Sl 512 && ulimit -Hl 512 && PATH=$PATH:/usr/share/rust/.cargo/bin && RUSTUP_TOOLCHAIN=nightly cargo ci-doctest"