diff --git a/pkgs/development/tools/prospector/default.nix b/pkgs/development/tools/prospector/default.nix
index 2f58737637f..0d6e5de4cfe 100644
--- a/pkgs/development/tools/prospector/default.nix
+++ b/pkgs/development/tools/prospector/default.nix
@@ -11,20 +11,22 @@ with python3.pkgs;
 
 buildPythonApplication rec {
   pname = "prospector";
-  version = "1.5.1";
+  version = "1.7.7";
   format = "pyproject";
+
   disabled = pythonOlder "3.6.1";
 
   src = pkgs.fetchFromGitHub {
     owner = "PyCQA";
     repo = pname;
     rev = version;
-    sha256 = "17f822cxrvcvnrzdx1a9fyi9afljq80b6g6z1k2bqa1vs21gwv7l";
+    hash = "sha256-sbPZmVeJtNphtjuZEfKcUgty9bJ3E/2Ya9RuX3u/XEs=";
   };
 
   postPatch = ''
     substituteInPlace pyproject.toml \
-      --replace 'pep8-naming = ">=0.3.3,<=0.10.0"' 'pep8-naming = "*"'
+      --replace 'pep8-naming = ">=0.3.3,<=0.10.0"' 'pep8-naming = "*"' \
+      --replace 'mccabe = "^0.6.0"' 'mccabe = "*"'
   '';
 
   nativeBuildInputs = [
@@ -61,9 +63,7 @@ buildPythonApplication rec {
   meta = with lib; {
     description = "Tool to analyse Python code and output information about errors, potential problems, convention violations and complexity";
     homepage = "https://github.com/PyCQA/prospector";
-    license = licenses.gpl2;
-    maintainers = with maintainers; [
-      kamadorueda
-    ];
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ kamadorueda ];
   };
 }