.travis.yml in grape-swagger-0.34.0 vs .travis.yml in grape-swagger-0.34.1

@@ -19,12 +19,12 @@
 matrix:
   fast_finish: true
 
   include:
     - rvm: 2.4.9
-      env:
+      env: GRAPE_VERSION=1.2.5
     - rvm: ruby-head
-      env:
+      env: GRAPE_VERSION=HEAD
     - rvm: jruby-head
       env:
 
   allow_failures:
     - rvm: 2.4.9