diff --git a/.travis.yml b/.travis.yml
index 03c9806..6b2fd0e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,9 +9,9 @@ env:
   global:
     - RACKET_DIR=~/racket
   matrix:
-    - RACKET_VERSION=6.0
-    - RACKET_VERSION=6.1
-    - RACKET_VERSION=6.2
+#    - RACKET_VERSION=6.0
+#    - RACKET_VERSION=6.1
+#    - RACKET_VERSION=6.2
     - RACKET_VERSION=6.3
     - RACKET_VERSION=6.4
     - RACKET_VERSION=HEAD