diff --git a/pkgs/development/python-modules/correctionlib/default.nix b/pkgs/development/python-modules/correctionlib/default.nix
index 91e9c603e13b..e3d52128ab2d 100644
--- a/pkgs/development/python-modules/correctionlib/default.nix
+++ b/pkgs/development/python-modules/correctionlib/default.nix
@@ -26,14 +26,14 @@
 
 buildPythonPackage rec {
   pname = "correctionlib";
-  version = "2.6.1";
+  version = "2.6.4";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "cms-nanoAOD";
     repo = "correctionlib";
     rev = "refs/tags/v${version}";
-    hash = "sha256-mfNSETMjhLoa3MK7zPggz568j1T6ay42cKa1GGKKfT8=";
+    hash = "sha256-l+JjW/giGzU00z0jBN3D4KB/LjTIxeJb3CS+Ge0gbiA=";
     fetchSubmodules = true;
   };
 
@@ -64,6 +64,11 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "correctionlib" ];
 
+  # One test requires running the produced `correctionlib` binary
+  preCheck = ''
+    export PATH=$out/bin:$PATH
+  '';
+
   meta = {
     description = "Provides a well-structured JSON data format for a wide variety of ad-hoc correction factors encountered in a typical HEP analysis";
     mainProgram = "correction";