diff --git a/.travis.yml b/.travis.yml
index a506ca0..40000a1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,8 +23,8 @@ env:
     # - RACKET_VERSION=6.0
     # - RACKET_VERSION=6.1
     # - RACKET_VERSION=6.1.1
-    - RACKET_VERSION=6.2
-    - RACKET_VERSION=6.3
+    # - RACKET_VERSION=6.2
+    # - RACKET_VERSION=6.3
     - RACKET_VERSION=6.4
     - RACKET_VERSION=6.5
     - RACKET_VERSION=6.6