diff --git a/tools/travis-install.sh b/tools/travis-install.sh
index 5d98d76062..f7d5a6877c 100755
--- a/tools/travis-install.sh
+++ b/tools/travis-install.sh
@@ -29,7 +29,7 @@ case "${TRAVIS_OS_NAME}" in
          mecab-ipadic \
          pcre \
          cutter
-    brew link openssl
+    brew link --force openssl
     ;;
 esac