diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 3b5276c4744fb312308e53cf97032204380b7526..3fbbc2a5811629603b8de00f168c01b578292a2e 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -39,7 +39,7 @@ jobs:
       - name: Cache
         uses: Swatinem/rust-cache@v2
       - name: Check
-        run: cargo check --target wasm32-unknown-unknown --all-targets
+        run: RUSTFLAGS=--cfg=web_sys_unstable_apis cargo check --target wasm32-unknown-unknown --all-targets
   lints:
     name: Lints
     runs-on: ubuntu-latest