diff --git a/crates/ruff_python_stdlib/src/typing.rs b/crates/ruff_python_stdlib/src/typing.rs
index bfd8f7f5c04b05..fbd759fe7fff7d 100644
--- a/crates/ruff_python_stdlib/src/typing.rs
+++ b/crates/ruff_python_stdlib/src/typing.rs
@@ -299,7 +299,7 @@ pub fn is_mutable_return_type(qualified_name: &[&str]) -> bool {
 pub fn is_immutable_return_type(qualified_name: &[&str]) -> bool {
     matches!(
         qualified_name,
-        ["datetime", "date" | "datetime" | "timedelta"]
+        ["datetime", "date" | "datetime" | "time" | "timedelta" | "timezone" | "tzinfo"]
             | ["decimal", "Decimal"]
             | ["fractions", "Fraction"]
             | ["operator", "attrgetter" | "itemgetter" | "methodcaller"]