diff --git a/requirements.txt b/requirements.txt
index 9781db7..e51e00a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 argutil==1.1.9
-GitPython==2.1.13
+GitPython==3.1.9
 mistune==0.8.4
 flake8==3.7.9
 pytest>=4.3.1