diff --git a/pkgs/development/python-modules/configargparse/default.nix b/pkgs/development/python-modules/configargparse/default.nix
index 75255badf98..d1dcce9699b 100644
--- a/pkgs/development/python-modules/configargparse/default.nix
+++ b/pkgs/development/python-modules/configargparse/default.nix
@@ -2,11 +2,11 @@
 
 buildPythonPackage rec {
   pname = "ConfigArgParse";
-  version = "1.0";
+  version = "1.2.3";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0cvinm7bb03qfjpq2zhfacm0qs4ip4378nvya8x41p4wpi2q4dxz";
+    sha256 = "1p1pzpf5qpf80bfxsx1mbw9blyhhypjvhl3i60pbmhfmhvlpplgd";
   };
 
   # no tests in tarball