diff --git a/pkgs/development/python-modules/configargparse/default.nix b/pkgs/development/python-modules/configargparse/default.nix
index 9b6e5da6263e..5646bca04736 100644
--- a/pkgs/development/python-modules/configargparse/default.nix
+++ b/pkgs/development/python-modules/configargparse/default.nix
@@ -6,14 +6,14 @@
 }:
 
 buildPythonPackage rec {
-  pname = "ConfigArgParse";
-  version = "1.3";
+  pname = "configargparse";
+  version = "1.4";
 
   src = fetchFromGitHub {
     owner = "bw2";
-    repo = pname;
-    rev = version;
-    sha256 = "147x781lgahn9r3gbhayhx1pf0iysf7q1hnr3kypy3p2k9v7a9mh";
+    repo = "ConfigArgParse";
+    rev = "v${version}";
+    sha256 = "0x6ar7d8qhr7gb1s8asbhqymg9jd635h7cyczqrbmvm8689zhj1d";
   };
 
   checkInputs = [
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 53d99d3469f3..665e5763b22f 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1458,7 +1458,8 @@ in {
 
   conda = callPackage ../development/python-modules/conda { };
 
-  ConfigArgParse = callPackage ../development/python-modules/configargparse { };
+  ConfigArgParse = self.configargparse; # added 2021-03-18
+  configargparse = callPackage ../development/python-modules/configargparse { };
 
   configobj = callPackage ../development/python-modules/configobj { };