diff --git a/.travis.yml b/.travis.yml
index 1ddce82..eb3bafc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,7 +19,16 @@ addons:
       - libfftw3-dev
       - vamp-plugin-sdk
       - ladspa-sdk
-      
+
+cache:
+  directories:
+    - $HOME/Library/Caches/Homebrew
+    - /usr/local/Homebrew
+
+before_cache:
+  - if [ "${TRAVIS_OS_NAME}" = "osx" ]; then brew cleanup; fi
+  - if [ "${TRAVIS_OS_NAME}" = "osx" ]; then find /usr/local/Homebrew \! -regex ".+\.git.+" -delete; fi
+
 before_install:
   - if [[ "$TRAVIS_OS_NAME" = "osx" ]] ; then brew update ; brew install libsndfile ; fi
 
diff --git a/README.md b/README.md
index 9a56e40..9494b4d 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,10 @@ tempo and pitch of an audio recording independently of one another.
 * Issue tracker: https://todo.sr.ht/~breakfastquay/rubberband
 * Github mirror: https://github.com/breakfastquay/rubberband
 
-CI builds: Linux, macOS, iOS [![Build Status](https://travis-ci.org/breakfastquay/rubberband.svg?branch=master)](https://travis-ci.org/breakfastquay/rubberband); Windows [![Build Status](https://ci.appveyor.com/api/projects/status/hhhhpf718jwhpyf6?svg=true)](https://ci.appveyor.com/project/breakfastquay/rubberband)
+CI builds:
+
+* [![Build Status](https://travis-ci.org/breakfastquay/rubberband.svg?branch=master)](https://travis-ci.org/breakfastquay/rubberband) (Linux, macOS, iOS)
+* [![Build Status](https://ci.appveyor.com/api/projects/status/hhhhpf718jwhpyf6?svg=true)](https://ci.appveyor.com/project/breakfastquay/rubberband) (Windows)
 
 
 ## Licence