diff --git a/.travis.yml b/.travis.yml
index 83050a6..a0a6d9c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,9 @@ env:
   global:
     - RACKET_DIR=~/racket
   matrix:
+    - RACKET_VERSION=6.1.0
     - RACKET_VERSION=6.1.1
+    - RACKET_VERSION=HEAD
 
 before_install:
   - git clone https://github.com/greghendershott/travis-racket.git ../travis-racket
diff --git a/info.rkt b/info.rkt
index e987e00..5bb420c 100644
--- a/info.rkt
+++ b/info.rkt
@@ -1,7 +1,7 @@
 #lang setup/infotab
 (define name "cover")
 (define collection "cover")
-(define deps '(("base" #:version "6.1.1") "errortrace-lib" "rackunit-lib"
+(define deps '(("base" #:version "6.1") "errortrace-lib" "rackunit-lib"
                "syntax-color-lib" "compiler-lib"))
 (define build-deps
   '("racket-doc" "scribble-lib" "typed-racket-doc" "htdp-lib"