diff --git a/.travis.yml b/.travis.yml
index 9d88d6f..c0302f0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,8 @@ rust:
   - 1.37.0
   - 1.38.0
   - 1.39.0
+  - 1.40.0
+  - 1.41.0
   - stable
   - beta
   - nightly