diff --git a/.travis.yml b/.travis.yml
index d16c137..408da20 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -27,7 +27,7 @@ jobs:
 
     # Minimum Supported Rust Version
     - env: TARGET=x86_64-unknown-linux-gnu
-      rust: 1.31.0
+      rust: 1.40.0
 
     # Raspberry Pi 1
     - env: TARGET=arm-unknown-linux-gnueabi DISABLE_EXAMPLES=1 DISABLE_TESTS=1