diff --git a/.travis.yml b/.travis.yml
index 8f5463e6..bcbb94c8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,10 +12,10 @@ matrix:
 
     # Minimum Rust supported channel.
     - os: linux
-      rust: 1.25.0
+      rust: 1.22.0
       env: TARGET=x86_64-unknown-linux-gnu
     - os: osx
-      rust: 1.25.0
+      rust: 1.22.0
       env: TARGET=x86_64-apple-darwin
 
 addons: