diff --git a/.travis.yml b/.travis.yml
index 37e0eac..d26d34a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -147,7 +147,7 @@ matrix:
       osx_image: xcode10
       stage: coverage
       name: coverage, xcode10
-      addons: { homebrew: { packages: ["lcov"] } }
+      addons: { homebrew: { packages: ["lcov"], update: true } }
       script: ./scripts/upload_coverage.sh
 
 before_install: