diff --git a/python/requirements.txt b/python/requirements.txt
index f35a1a312e32322ba154994ccce9f41797db71c7..26dc552140fbe4e2f9e3073a8b08ff9923b34e96 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -1,5 +1,6 @@
 requests>=2.20.0
-numpy>=1.12
+numpy>=1.12, <=1.16.4 ; python_version<"3.5"
+numpy>=1.12 ; python_version>="3.5"
 protobuf>=3.1.0
 recordio>=0.1.0
 matplotlib<=2.2.4 ; python_version<"3.6"