diff --git a/vm/src/builtins/builtinfunc.rs b/vm/src/builtins/builtinfunc.rs
index 66437ee5f..3dea2fa87 100644
--- a/vm/src/builtins/builtinfunc.rs
+++ b/vm/src/builtins/builtinfunc.rs
@@ -254,6 +254,15 @@ impl PyBuiltinMethod {
             self.class.name()
         )
     }
+    #[pymethod(magic)]
+    fn reduce(
+        &self,
+        vm: &VirtualMachine,
+    ) -> (Option<PyObjectRef>, (Option<PyObjectRef>, PyStrRef)) {
+        let builtinfunc_getattr = vm.builtins.get_attr("getattr", vm).ok();
+        let classname = vm.builtins.get_attr(self.class.name().to_string(), vm).ok();
+        (builtinfunc_getattr, (classname, self.value.name.clone()))
+    }
 }
 impl Unconstructible for PyBuiltinMethod {}
 
diff --git a/vm/src/builtins/function.rs b/vm/src/builtins/function.rs
index 460ceb762..1a3cc2bf0 100644
--- a/vm/src/builtins/function.rs
+++ b/vm/src/builtins/function.rs
@@ -552,6 +552,17 @@ impl PyBoundMethod {
         ))
     }
 
+    #[pymethod(magic)]
+    fn reduce(
+        &self,
+        vm: &VirtualMachine,
+    ) -> (Option<PyObjectRef>, (PyObjectRef, Option<PyObjectRef>)) {
+        let builtinfunc_getattr = vm.builtins.get_attr("getattr", vm).ok();
+        let funcself = self.object.clone();
+        let funcname = self.function.get_attr("__name__", vm).ok();
+        (builtinfunc_getattr, (funcself, funcname))
+    }
+
     #[pygetset(magic)]
     fn doc(&self, vm: &VirtualMachine) -> PyResult {
         self.function.get_attr("__doc__", vm)