diff --git a/pkgs/development/python-modules/django-mailman3/default.nix b/pkgs/development/python-modules/django-mailman3/default.nix
index 9486764e2783..081b6bbbcb7e 100644
--- a/pkgs/development/python-modules/django-mailman3/default.nix
+++ b/pkgs/development/python-modules/django-mailman3/default.nix
@@ -4,11 +4,11 @@
 
 buildPythonPackage rec {
   pname = "django-mailman3";
-  version = "1.3.7";
+  version = "1.3.8";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "6ea8c24c13e7afe744f18e18e4d19d0e74223e0d9bd5d782deea85dcb865feb7";
+    sha256 = "sha256-C3ZyiQZ50JFg2e+HS0oIJFK+dV8TcDYehVh875zBRFU=";
   };
 
   propagatedBuildInputs = [