diff --git a/qiskit_ibm_runtime/utils/json.py b/qiskit_ibm_runtime/utils/json.py
index 19e38e784..6b1468bea 100644
--- a/qiskit_ibm_runtime/utils/json.py
+++ b/qiskit_ibm_runtime/utils/json.py
@@ -245,7 +245,7 @@ def default(self, obj: Any) -> Any:  # pylint: disable=arguments-differ
         if isinstance(obj, ParameterView):
             return obj.data
         if isinstance(obj, Instruction):
-            kwargs: dict[str, object] = {"use_symengine": bool(optionals.HAS_SYMENGINE)}
+            kwargs = {"use_symengine": bool(optionals.HAS_SYMENGINE)}
             if _TERRA_VERSION[0] >= 1:
                 # NOTE: This can be updated only after the server side has
                 # updated to a newer qiskit version.