diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bf2e629..8379085 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -171,10 +171,8 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       
-      - name: Install Rust
-        uses: dtolnay/rust-toolchain@master
-        with:
-          toolchain: "1.90"
+      - name: Install Rust nightly (required for doc_cfg feature)
+        uses: dtolnay/rust-toolchain@nightly
       
       - name: Cache cargo
         uses: Swatinem/rust-cache@v2