diff --git a/.travis.yml b/.travis.yml
index 9636e3dd..d9d31771 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,6 +24,7 @@ jobs:
       language: shell       # 'language: python' is an error on Travis CI macOS
       before_install:
         - brew cask install mactex
+        - brew install gettext
       allow_failures: true
     - name: "Python 3.8.0 on Windows"
       os: windows           # Windows 10.0.17134 N/A Build 17134