diff --git a/pkgs/development/python-modules/python-language-server/default.nix b/pkgs/development/python-modules/python-language-server/default.nix
index 69fbaa78067..b776a784c8e 100644
--- a/pkgs/development/python-modules/python-language-server/default.nix
+++ b/pkgs/development/python-modules/python-language-server/default.nix
@@ -30,6 +30,13 @@ buildPythonPackage rec {
     sha256 = "07x6jr4z20jxn03bxblwc8vk0ywha492cgwfhj7q97nb5cm7kx0q";
   };
 
+  postPatch = ''
+    # Reading the changelog I don't expect an API break in pycodestyle and pyflakes
+    substituteInPlace setup.py \
+      --replace "pycodestyle>=2.6.0,<2.7.0" "pycodestyle>=2.6.0,<2.8.0" \
+      --replace "pyflakes>=2.2.0,<2.3.0" "pyflakes>=2.2.0,<2.4.0"
+  '';
+
   propagatedBuildInputs = [ setuptools jedi pluggy future python-jsonrpc-server ujson ]
     ++ lib.optional (withProvider "autopep8") autopep8
     ++ lib.optional (withProvider "mccabe") mccabe