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-rw-r--r--.travis.yml1
1 files changed, 1 insertions, 0 deletions
diff --git a/.travis.yml b/.travis.yml
index 11393e7d86..c1df433881 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -120,6 +120,7 @@ before_install:
- |
if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
if [[ "$TRAVIS_OSX_IMAGE" == "xcode9.2" ]]; then
+ brew remove --force $(brew list) --ignore-dependencies
brew update
pushd "/usr/local/Homebrew/Library/Taps/homebrew/homebrew-core"
git checkout 55e02323812604add9a69bab8730319b9255a697