diff --git a/pkgs/development/python-modules/compliance-trestle/default.nix b/pkgs/development/python-modules/compliance-trestle/default.nix
index 545a8d7f4bfb..8f1f1a7d66c5 100644
--- a/pkgs/development/python-modules/compliance-trestle/default.nix
+++ b/pkgs/development/python-modules/compliance-trestle/default.nix
@@ -28,14 +28,14 @@
 
 buildPythonPackage rec {
   pname = "compliance-trestle";
-  version = "3.9.0";
+  version = "3.9.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "oscal-compass";
     repo = "compliance-trestle";
     tag = "v${version}";
-    hash = "sha256-WWqrUfDlzpZAXtOlq3Uq8AmUOerUmMCr9KPjdjk4JHg=";
+    hash = "sha256-AJ1luN2X6Q4dp4fna14x6HgUw1uX4X87BXkVBPVIn9k=";
     fetchSubmodules = true;
   };