diff --git a/travis/macos-install.sh b/travis/macos-install.sh
index 94ff084..987dbb5 100755
--- a/travis/macos-install.sh
+++ b/travis/macos-install.sh
@@ -5,6 +5,7 @@ set -ex
 export HOMEBREW_NO_INSTALL_CLEANUP=1
 
 # Python 3.7.4 with 10.12 bottle
+brew install openssl@1.1
 brew upgrade https://raw.githubusercontent.com/Homebrew/homebrew-core/e9004bd764c9436750a50e0b428548f68fe6a38a/Formula/python.rb
 
 which python3