diff --git a/.travis.yml b/.travis.yml
index 1f48f7a4..ce487701 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 language: rust
 
 rust:
-  - nightly
+  - nightly-2019-07-06
   - stable
 
 before_script: