diff --git a/pkgs/development/python-modules/iminuit/default.nix b/pkgs/development/python-modules/iminuit/default.nix
index 5bfb66fe4c6c..42a1d7c4ffdb 100644
--- a/pkgs/development/python-modules/iminuit/default.nix
+++ b/pkgs/development/python-modules/iminuit/default.nix
@@ -2,12 +2,12 @@
 
 buildPythonPackage rec {
   pname = "iminuit";
-  version = "2.4.0";
+  version = "2.6.1";
   disabled = !isPy3k;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "350c13d33f3ec5884335aea1cc11a17ae49dd8e6b2181c3f1b3c9c27e2e0b228";
+    sha256 = "5fb8786bcad53762648ddacb008d18b49704ba5c011ade240004bfc5a628b4f6";
   };
 
   nativeBuildInputs = [ cmake ];