diff --git a/python/requirements.txt b/python/requirements.txt
index 6a88d61a94c182db3320e4de30f45be4c852f70f..7802b491822ddf5e923842dd691e86e13e5d8b0f 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -3,10 +3,8 @@ numpy>=1.13, <=1.16.4 ; python_version<"3.5"
 numpy>=1.13 ; python_version>="3.5"
 protobuf>=3.1.0
 gast==0.3.3
-matplotlib<=2.2.4 ; python_version<"3.6"
 scipy>=0.19.0, <=1.2.1 ; python_version<"3.5"
 nltk>=3.2.2, <=3.4 ; python_version<"3.5"
-matplotlib<=3.2.1 ; python_version>="3.6"
 scipy<=1.3.1 ; python_version=="3.5"
 scipy ; python_version>"3.5"
 nltk ; python_version>="3.5"