diff --git a/pkgs/development/python-modules/swh-core/default.nix b/pkgs/development/python-modules/swh-core/default.nix
index 4752ec338fcd..8f0e90a34136 100644
--- a/pkgs/development/python-modules/swh-core/default.nix
+++ b/pkgs/development/python-modules/swh-core/default.nix
@@ -3,6 +3,13 @@
   stdenv,
   buildPythonPackage,
   fetchFromGitLab,
+  pythonAtLeast,
+
+  # build-system
+  setuptools,
+  setuptools-scm,
+
+  # dependencies
   backports-entry-points-selectable,
   click,
   deprecated,
@@ -11,8 +18,8 @@
   requests,
   sentry-sdk,
   tenacity,
-  setuptools,
-  setuptools-scm,
+
+  # tests
   aiohttp-utils,
   flask,
   hypothesis,
@@ -114,6 +121,13 @@ buildPythonPackage (finalAttrs: {
     pkgs.zstd
   ];
 
+  disabledTestPaths = lib.optionals (pythonAtLeast "3.14") [
+    # shutil.RegistryError: .tar.zst is already registered for "zstdtar"
+    "swh/core/tests/test_cli_nar.py"
+    "swh/core/tests/test_nar.py"
+    "swh/core/tests/test_tarball.py"
+  ];
+
   disabledTests = lib.optionals stdenv.hostPlatform.isDarwin [
     # FileExistsError: [Errno 17] File exists:
     "test_uncompress_upper_archive_extension"