diff --git a/Lib/test/test_weakref.py b/Lib/test/test_weakref.py
index 524b8159a2..af873570ef 100644
--- a/Lib/test/test_weakref.py
+++ b/Lib/test/test_weakref.py
@@ -228,8 +228,6 @@ def test_proxy_reuse(self):
         self.assertIs(proxy1, proxy2,
                      "proxy object w/out callback should have been re-used")
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
     def test_basic_proxy(self):
         o = C()
         self.check_proxy(o, weakref.proxy(o))
diff --git a/vm/src/builtins/weakproxy.rs b/vm/src/builtins/weakproxy.rs
index 38b972057c..9ab7ad2a94 100644
--- a/vm/src/builtins/weakproxy.rs
+++ b/vm/src/builtins/weakproxy.rs
@@ -58,7 +58,7 @@ crate::common::static_cell! {
     static WEAK_SUBCLASS: PyTypeRef;
 }
 
-#[pyimpl(with(GetAttr, SetAttr, Constructor, AsSequence, AsMapping))]
+#[pyimpl(with(GetAttr, SetAttr, Constructor, Comparable, AsSequence, AsMapping))]
 impl PyWeakProxy {
     fn try_upgrade(&self, vm: &VirtualMachine) -> PyResult {
         self.weak.upgrade().ok_or_else(|| new_reference_error(vm))
@@ -88,6 +88,7 @@ impl PyWeakProxy {
         self.try_upgrade(vm)?.repr(vm)
     }
 
+    #[pymethod(magic)]
     fn contains(&self, needle: PyObjectRef, vm: &VirtualMachine) -> PyResult<bool> {
         let obj = self.try_upgrade(vm)?;
         PySequence::contains(&obj, &needle, vm)