diff --git a/.travis.yml b/.travis.yml
index 5815fe4..5ccb5ae 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,11 +4,8 @@ env:
   global:
     - RACKET_DIR=~/racket
   matrix:
-    - RACKET_VERSION=6.1.1
-    - RACKET_VERSION=6.2
-    - RACKET_VERSION=6.2.1
-    - RACKET_VERSION=6.3
-    - RACKET_VERSION=6.4
+    - RACKET_VERSION=6.6
+    - RACKET_VERSION=6.7
     - RACKET_VERSION=HEAD
 
 matrix: