diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 540f033f5d7..3829a91e7a2 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -20043,12 +20043,13 @@ in {
   };
 
   pyflakes = buildPythonPackage rec {
-    name = "pyflakes-${version}";
-    version = "1.0.0";
+    pname = "pyflakes";
+    version = "1.3.0";
+    name = "${pname}-${version}";
 
     src = pkgs.fetchurl {
-      url = "mirror://pypi/p/pyflakes/${name}.tar.gz";
-      sha256 = "f39e33a4c03beead8774f005bd3ecf0c3f2f264fa0201de965fce0aff1d34263";
+      url = "mirror://pypi/${builtins.substring 0 1 pname}/${pname}/${name}.tar.gz";
+      sha256 = "a4f93317c97a9d9ed71d6ecfe08b68e3de9fea3f4d94dcd1d9d83ccbf929bc31";
     };
 
     buildInputs = with self; [ unittest2 ];