diff --git a/.travis.yml b/.travis.yml
index 09edbfe4ee..481f8fea88 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,14 +4,11 @@ matrix:
   include:
     # NOTE used to build docs on successful merges to master
     - env: TARGET=x86_64-unknown-linux-gnu
-      rust: beta
 
     - env: TARGET=thumbv6m-none-eabi
-      rust: beta
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=thumbv7m-none-eabi
-      rust: beta
       if: (branch = staging OR branch = trying) OR (type = pull_request AND branch = master)
 
     - env: TARGET=x86_64-unknown-linux-gnu