diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a76dc70d..bf3becb0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,11 +22,11 @@ jobs:
       - run: cargo test
 
   msrv:
-    name: Rust 1.31.0
+    name: Rust 1.38.0
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: dtolnay/rust-toolchain@1.31.0
+      - uses: dtolnay/rust-toolchain@1.38.0
       - run: cargo check
 
   clippy: