diff --git a/src/dynapyt/instrument/CodeInstrumenter.py b/src/dynapyt/instrument/CodeInstrumenter.py
index e7847ae..61407fb 100644
--- a/src/dynapyt/instrument/CodeInstrumenter.py
+++ b/src/dynapyt/instrument/CodeInstrumenter.py
@@ -1029,6 +1029,43 @@ def leave_Assign(self, original_node, updated_node):
         else:
             return updated_node.with_changes(value=call)
 
+    def leave_AnnAssign(self, original_node, updated_node):
+        # Keep track of nodes of blacklisted attributes
+        if self.file_path.endswith("__init__.py") and m.matches(
+            original_node, m.AnnAssign(target=m.OneOf(*self.blacklist_name_objs))
+        ):
+            self.blacklist_nodes.append(cst.SimpleStatementLine(body=[original_node]))
+            self.blacklist_nodes.append(cst.Newline(value="\n"))
+        if "write" not in self.selected_hooks or original_node.value is None:
+            return updated_node
+        callee_name = cst.Attribute(
+            value=cst.Name(value="_rt"), attr=cst.Name(value="_write_")
+        )
+        self.to_import.add("_write_")
+        iid = self.__create_iid(original_node)
+        ast_arg = cst.Arg(value=cst.Name("_dynapyt_ast_"))
+        iid_arg = cst.Arg(value=cst.Integer(value=str(iid)))
+        if m.matches(updated_node.value, m.Yield()):
+            val_arg = cst.Arg(value=updated_node.value.value)
+        else:
+            val_arg = cst.Arg(value=updated_node.value)
+        left_arg = cst.Arg(
+            value=cst.List(
+                elements=[
+                    cst.Element(
+                        self.__wrap_in_lambda(original_node.target, updated_node.target)
+                    )
+                ]
+            )
+        )
+        call = cst.Call(func=callee_name, args=[ast_arg, iid_arg, val_arg, left_arg])
+        if m.matches(updated_node.value, m.Yield()):
+            return updated_node.with_changes(
+                value=updated_node.value.with_changes(value=call)
+            )
+        else:
+            return updated_node.with_changes(value=call)
+
     def leave_AugAssign(self, original_node, updated_node):
         if ("write" not in self.selected_hooks) and (
             snake(type(original_node.operator).__name__) not in self.selected_hooks