diff --git a/pkgs/development/python-modules/cmdstanpy/default.nix b/pkgs/development/python-modules/cmdstanpy/default.nix
index 6fcf618bafef..a38a717fc252 100644
--- a/pkgs/development/python-modules/cmdstanpy/default.nix
+++ b/pkgs/development/python-modules/cmdstanpy/default.nix
@@ -16,14 +16,14 @@
 
 buildPythonPackage rec {
   pname = "cmdstanpy";
-  version = "1.2.4";
+  version = "1.2.5";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "stan-dev";
     repo = "cmdstanpy";
     rev = "refs/tags/v${version}";
-    hash = "sha256-SKDqLvWbzaBcL13E87kcphBJNIZfdkPp2g4SIDEKA0U=";
+    hash = "sha256-/MiWawB1Y4/eMBHXQLjd+P+Pe8EtsLbGFrzQa1RNf6g=";
   };
 
   patches = [