diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index d5c1b555..dea8320b 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -7,6 +7,7 @@ env:
   # https://rustwasm.github.io/wasm-bindgen/api/web_sys/struct.Clipboard.html
   # https://rustwasm.github.io/docs/wasm-bindgen/web-sys/unstable-apis.html
   RUSTFLAGS: --cfg=web_sys_unstable_apis
+  RUSTDOCFLAGS: -D warnings
 
 jobs:
   check_default: