diff --git a/pkgs/development/python-modules/sumo/default.nix b/pkgs/development/python-modules/sumo/default.nix
index da7641c9d056..1f60553de0bc 100644
--- a/pkgs/development/python-modules/sumo/default.nix
+++ b/pkgs/development/python-modules/sumo/default.nix
@@ -18,7 +18,7 @@
 
 buildPythonPackage rec {
   pname = "sumo";
-  version = "2.3.7";
+  version = "2.3.8";
   format = "setuptools";
 
   disabled = pythonOlder "3.8";
@@ -27,7 +27,7 @@ buildPythonPackage rec {
     owner = "SMTG-UCL";
     repo = "sumo";
     rev = "refs/tags/v${version}";
-    hash = "sha256-9NHz8SPymD9zANWMeajjavpjw68X4abqhrLl0dn92l0=";
+    hash = "sha256-nQ5US7maFcOJCqFYeokGiBFp3jhiOPSfCBeclLdHdkk=";
   };
 
   nativeBuildInputs = [