diff --git a/pkgs/development/python-modules/imap-tools/default.nix b/pkgs/development/python-modules/imap-tools/default.nix
index d914f72b94bc..039f1d77e8c9 100644
--- a/pkgs/development/python-modules/imap-tools/default.nix
+++ b/pkgs/development/python-modules/imap-tools/default.nix
@@ -34,6 +34,10 @@ buildPythonPackage rec {
     "test_folders"
     "test_idle"
     "test_live"
+
+    # broken by Python 3.12.6 email parsing changes: https://github.com/ikvk/imap_tools/issues/242
+    # FIXME: remove when fixed
+    "test_utils"
   ];
 
   pythonImportsCheck = [ "imap_tools" ];