diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e150449..ec54e51 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -128,7 +128,7 @@ jobs:
       - uses: actions/checkout@v7
 
       - name: Install Rust toolchain (pinned MSRV)
-        uses: dtolnay/rust-toolchain@1.97
+        uses: dtolnay/rust-toolchain@1.100
 
       - uses: Swatinem/rust-cache@v2
         with: