diff --git a/pkgs/development/python-modules/pyicu/default.nix b/pkgs/development/python-modules/pyicu/default.nix
index efb7467e485e..124846fab8e3 100644
--- a/pkgs/development/python-modules/pyicu/default.nix
+++ b/pkgs/development/python-modules/pyicu/default.nix
@@ -8,14 +8,14 @@
 
 buildPythonPackage rec {
   pname = "PyICU";
-  version = "2.6";
+  version = "2.7.3";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0wb3v421i2fnnxdywam4ay8hqvnxlz0r2nrpx5lqy3rn6dlbz9d9";
+    sha256 = "1jv1pds94agvn3zs33a8p8f0mk7f5pjwmczmg1s05ri5p0kzk4h8";
   };
 
-  nativeBuildInputs = [ icu ]; # for icu-config
+  nativeBuildInputs = [ icu ]; # for icu-config, but should be replaced with pkg-config
   buildInputs = [ icu ];
   checkInputs = [ pytestCheckHook six ];