diff --git a/.travis.yml b/.travis.yml
index eb4ba43..6b418e9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,13 @@ env:
     - RACKET_VERSION=6.4
     - RACKET_VERSION=6.5
     - RACKET_VERSION=6.6
+    - RACKET_VERSION=6.9
+    - RACKET_VERSION=6.12
+    - RACKET_VERSION=7.0
+    - RACKET_VERSION=7.1
+    - RACKET_VERSION=7.2
+    - RACKET_VERSION=HEAD
+    - RACKET_VERSION=HEADCS
 
 # You may want to test against certain versions of Racket, without
 # having them count against the overall success/failure.