diff --git a/datamodel_code_generator/format.py b/datamodel_code_generator/format.py
index 9e19edc6b..6fbe885cc 100644
--- a/datamodel_code_generator/format.py
+++ b/datamodel_code_generator/format.py
@@ -17,7 +17,7 @@ class PythonVersion(Enum):
 
     @property
     def has_literal_type(self) -> bool:
-        return self.value >= self.PY_38.value  # type: ignore
+        return self.value not in {self.PY_36.value, self.PY_37.value}  # type: ignore
 
 
 if TYPE_CHECKING: