diff --git a/.travis.yml b/.travis.yml
index 99edd91988857eeee35fde1ae4520bfaf6d7fb4d..2c60bc2674bcd3ff0ee817f8398c781de383c66b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,5 +24,7 @@ matrix:
   include:
     - node_js: 0.10
       env: TEST_SUITE=simple
-    - node_js: 6
-      env: USE_YARN=yes TEST_SUITE=simple
+# There's a weird Yarn/Lerna bug related to prerelease versions.
+# TODO: reenable after we ship 1.0.
+#    - node_js: 6
+#      env: USE_YARN=yes TEST_SUITE=simple