diff --git a/.travis.yml b/.travis.yml
index a569a2d..5adba9d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,7 +15,7 @@ before_install:
   - 'nvm install-latest-npm'
 install:
   - 'if [ "${TRAVIS_NODE_VERSION}" = "0.6" ]; then nvm install --latest-npm 0.8 && npm install && nvm use "${TRAVIS_NODE_VERSION}"; else npm install; fi;'
-  - 'npm ls > /dev/null'
+  - 'npm prune && npm ls' # > /dev/null'
 script:
   - 'if [ -n "${PRETEST-}" ]; then npm run pretest ; fi'
   - 'if [ -n "${POSTTEST-}" ]; then npm run posttest ; fi'