diff --git a/.travis.yml b/.travis.yml
index bd2632cd..3c54e9ea 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,7 +11,7 @@ matrix:
       env: TARGET=x86_64-apple-darwin
       cache: cargo
     - os: linux
-      rust: 1.20.0
+      rust: 1.21.0
       env: TARGET=x86_64-unknown-linux-gnu
       cache: cargo
     - os: linux