diff --git a/pkgs/development/python-modules/ruyaml/default.nix b/pkgs/development/python-modules/ruyaml/default.nix
index 38e33e5fe33f..4131200f2276 100644
--- a/pkgs/development/python-modules/ruyaml/default.nix
+++ b/pkgs/development/python-modules/ruyaml/default.nix
@@ -49,6 +49,13 @@ buildPythonPackage rec {
     "ruyaml"
   ];
 
+  disabledTests = [
+    # Assertion error
+    "test_issue_60"
+    "test_issue_60_1"
+    "test_issue_61"
+  ];
+
   meta = with lib; {
     description = "YAML 1.2 loader/dumper package for Python";
     homepage = "https://ruyaml.readthedocs.io/";