diff --git a/requirements.txt b/requirements.txt
index 8b97dd4bee8..250113b92ff 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-matplotlib>=1.1.0
+matplotlib>=1.3.1
 numpy>=1.6.1
 scipy>=0.9.0
 six>=1.4