diff --git a/.travis.yml b/.travis.yml
index 204c63f..fc12875 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -60,7 +60,7 @@
       env: OPTIONAL=true
       before_install:
         # Python 3 is needed for Argument Clinic and multissl
-        - brew install xz python3
+        - HOMEBREW_NO_AUTO_UPDATE=1 brew install xz python3
         - export PATH=$(brew --prefix)/bin:$(brew --prefix)/sbin:$PATH
     - os: linux
       language: c