diff --git a/req-travis-conda.txt b/req-travis-conda.txt
index 6eb1c5486..0c5517db7 100644
--- a/req-travis-conda.txt
+++ b/req-travis-conda.txt
@@ -6,7 +6,7 @@ numpy==1.14.0
 pillow==5.0.0
 pytables==3.2.2
 pyyaml==3.12
-pyzmq==16.0.3
+pyzmq==16.0.4
 requests==2.18.4
 scipy==1.0.0
 six==1.11.0