diff --git a/pkgs/development/python-modules/pylint/default.nix b/pkgs/development/python-modules/pylint/default.nix
index 5264b0c7046e..2d46d041df47 100644
--- a/pkgs/development/python-modules/pylint/default.nix
+++ b/pkgs/development/python-modules/pylint/default.nix
@@ -96,6 +96,8 @@ buildPythonPackage rec {
     "test_save_and_load_not_a_linter_stats"
     # Truncated string expectation mismatch
     "test_truncated_compare"
+    # Probably related to pytest versions, see pylint-dev/pylint#9477 and pylint-dev/pylint#9483
+    "test_functional"
     # AssertionError: assert [('specializa..., 'Ancestor')] == [('aggregatio..., 'Ancestor')]
     "test_functional_relation_extraction"
   ] ++ lib.optionals stdenv.isDarwin [
diff --git a/pkgs/development/python-modules/python-lsp-black/default.nix b/pkgs/development/python-modules/python-lsp-black/default.nix
index 59b4cdaa76f0..6387e833b7fc 100644
--- a/pkgs/development/python-modules/python-lsp-black/default.nix
+++ b/pkgs/development/python-modules/python-lsp-black/default.nix
@@ -7,6 +7,7 @@
 , python-lsp-server
 , setuptools
 , tomli
+, fetchpatch
 }:
 
 buildPythonPackage rec {
@@ -22,6 +23,17 @@ buildPythonPackage rec {
     hash = "sha256-nV6mePSWzfPW2RwXg/mxgzfT9wD95mmTuPnPEro1kEY=";
   };
 
+  patches =
+    /** fix test failure with black<24.2.0;
+        remove this patch once python-lsp-black>2.0.0 */
+    lib.optional
+      (with lib; (versionOlder version "2.0.1") && (versionAtLeast black.version "24.2.0"))
+      (fetchpatch {
+        url = "https://patch-diff.githubusercontent.com/raw/python-lsp/python-lsp-black/pull/56.patch";
+        hash = "sha256-38bYU27+xtA8Kq3appXTkNnkG5/XgrUJ2nQ5+yuSU2U=";
+      })
+    ++ [ ];
+
   nativeBuildInputs = [
     setuptools
   ];