diff --git a/requirements-container.txt b/requirements-container.txt
index 9d9f910..bbd3ec0 100644
--- a/requirements-container.txt
+++ b/requirements-container.txt
@@ -1,5 +1,5 @@
 django-auth-ldap==5.3.0
-dulwich==0.25.2
+dulwich==1.0.0
 granian[uvloop]==2.6.1
 python3-saml==1.16.0
 --no-binary lxml