Switch to Go 1.5.1 (fixes #955)
diff --git a/.travis.yml b/.travis.yml
index 3041fdd824b..ff8a1038a4c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,7 +7,7 @@ services:
 # http://docs.travis-ci.com/user/ci-environment/#CI-environment-OS
 # gimme has to be kept in sync with Boulder's Go version setting in .travis.yml
 before_install:
-  - '[ "xxx$BOULDER_INTEGRATION" = "xxx" ] || eval "$(gimme 1.5)"'
+  - '[ "xxx$BOULDER_INTEGRATION" = "xxx" ] || eval "$(gimme 1.5.1)"'
 
 # using separate envs with different TOXENVs creates 4x1 Travis build
 # matrix, which allows us to clearly distinguish which component under
