diff --git a/.travis.yml b/.travis.yml
index 55a7f6c..324332d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 language: rust
 cache: cargo
 rust:
-  - 1.39
+  - 1.39.0
 
 if: tag IS blank