diff --git a/.travis.yml b/.travis.yml
index 0e647dd..edc522f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,8 @@
 language: rust
-rust: nightly
+rust:
+  - stable
+  - beta
+  - nightly
 env:
   global:
     - secure: gokQ7xIWwmAuEUW3IyS5B/pbZxdFSSDBto5beJ+4ACGcRMDqJ/eCPf1ekSVXME4TWM46uUCjxcdUjYhIhQ6sG4zfWck4u45qRJ5JbIoTvR+ykxhN1j3Zi5x9ptP3ALDbHn2i3v6t9xohORfQpz3dVND5c7thbYDyKP2ZR1sez5c=