diff --git a/requirements.txt b/requirements.txt
index 316ce9844b..73ed231af3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ pandas==0.22.0
 psutil==5.4.3
 git+git://github.com/Harmon758/Py3kAiml.git@master#egg=Py3kAiml
 pydealer==1.4.0
-pygost==3.1
+pygost==3.9
 pyowm==2.8.0
 python-chess==0.16.2
 python-dateutil==2.7.2