diff --git a/Brewfile.travis b/Brewfile.travis
index e6743e03..601058fe 100644
--- a/Brewfile.travis
+++ b/Brewfile.travis
@@ -2,6 +2,7 @@ brew 'autoconf'
 brew 'autoconf-archive'
 brew 'automake'
 brew 'check'
+brew 'cmocka'
 brew 'curl'
 brew 'expat'
 brew 'glib'