diff --git a/.travis.yml b/.travis.yml
index 6609f1a..41c5a70 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -57,5 +57,6 @@ script:
  - raco setup --check-pkg-deps --pkgs repltest
 
 after_success:
- - raco pkg install --deps search-auto cover cover-coveralls
+ #- raco pkg install --deps search-auto cover cover-coveralls
+ - raco pkg install --deps search-auto https://github.com/jsmaniac/cover.git#fix-vector-ref-minus-one cover-coveralls
  - raco cover --verbose -b -f coveralls -d $TRAVIS_BUILD_DIR/coverage .