diff --git a/pkgs/development/python-modules/frozendict/default.nix b/pkgs/development/python-modules/frozendict/default.nix
index 2d0e540b4fc9..ccc637a32fb7 100644
--- a/pkgs/development/python-modules/frozendict/default.nix
+++ b/pkgs/development/python-modules/frozendict/default.nix
@@ -34,6 +34,10 @@ buildPythonPackage rec {
   disabledTests = [
     # TypeError: unsupported operand type(s) for |=: 'frozendict.frozendict' and 'dict'
     "test_union"
+    # non-standard assertions
+    "test_repr"
+    "test_format"
+    "test_str"
   ];
 
   disabledTestPaths = [