diff --git a/setup.py b/setup.py
index 0698ebe2f..b88f1fca8 100644
--- a/setup.py
+++ b/setup.py
@@ -50,7 +50,7 @@ install_requires = [
     "colorama>=0.3.9",
     "configobj>=5.0.6",
     "gitpython>3",
-    "dulwich>=0.20.15",
+    "dulwich>=0.20.18",
     "pygit2>=1.4.0",
     "setuptools>=34.0.0",
     "nanotime>=0.5.2",