diff --git a/.github/workflows/cargo-doc.yaml b/.github/workflows/cargo-doc.yaml
index df06f9fd05..2a5ab3ff5c 100644
--- a/.github/workflows/cargo-doc.yaml
+++ b/.github/workflows/cargo-doc.yaml
@@ -16,6 +16,9 @@ on:
       - Cargo.lock
       - crates/**
 
+env:
+  RUSTFLAGS: --cfg tokio_unstable
+
 # Cancel previous runs of this workflow when a new commit is added to the PR, branch or tag
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}