diff --git a/.travis.yml b/.travis.yml
index 282e07d..5ae2476 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,11 +5,17 @@ env:
     - 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=6.5
 
 before_install:
   - git clone https://github.com/greghendershott/travis-racket.git ../travis-racket
   - cat ../travis-racket/install-racket.sh | bash
   - export PATH="${RACKET_DIR}/bin:${PATH}"
+  - raco pkg install --deps search-auto cover cover-coveralls
 
 install: raco pkg install --deps search-auto $TRAVIS_BUILD_DIR # install dependencies