diff --git a/pkgs/development/python-modules/iamdata/default.nix b/pkgs/development/python-modules/iamdata/default.nix
index 8fee00aa661b..48a0a4e8cf2b 100644
--- a/pkgs/development/python-modules/iamdata/default.nix
+++ b/pkgs/development/python-modules/iamdata/default.nix
@@ -8,14 +8,14 @@
 
 buildPythonPackage (finalAttrs: {
   pname = "iamdata";
-  version = "0.1.202601221";
+  version = "0.1.202601231";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "cloud-copilot";
     repo = "iam-data-python";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-IyRkeKrLd4F4m9IkfHN/FFF0k2BNTMGIC76id+qULPk=";
+    hash = "sha256-85ogu9BYQqacBHR44BT7pQuv9DpUxk1Cl8/VBDF/lqg=";
   };
 
   __darwinAllowLocalNetworking = true;