diff --git a/requirements.txt b/requirements.txt
index 30e16b3f68..6c7420b42a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ croniter==1.3.4
 decorator==4.1.2
 docker-py==1.2.3
 docutils==0.12
-dulwich==0.17.3
+dulwich==0.18.5
 ephemeral-port-reserve==1.1.0
 future==0.16.0
 google-auth==1.2.0