diff --git a/.travis.yml b/.travis.yml
index 282d8e7..3644de1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -41,7 +41,7 @@ matrix:
           script: cargo build --target "$TARGET" --no-default-features
 
         # minimum version
-        - rust: 1.30.0
+        - rust: 1.31.0
           script: cargo build
 
 sudo: false