diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c22be1e..9b63889 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -235,7 +235,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install MSRV toolchain
-        uses: dtolnay/rust-toolchain@1.70.0
+        uses: dtolnay/rust-toolchain@1.100.0
 
       - name: Cache dependencies
         uses: Swatinem/rust-cache@v2