diff --git a/.travis.yml b/.travis.yml
index 15818252d85..1a0753990dd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -100,7 +100,7 @@ env:
         brew install \
           ccache \
           gdbm \
-          gmp
+          gmp \
           libffi \
           openssl@1.1 \
           zlib