diff --git a/src/parse_datetime.rs b/src/parse_datetime.rs
index 7b1f536..026c9e4 100644
--- a/src/parse_datetime.rs
+++ b/src/parse_datetime.rs
@@ -255,7 +255,7 @@ mod tests {
             ];
 
             for offset in offsets {
-                let time = Utc.timestamp(offset, 0);
+                let time = Utc.timestamp_opt(offset, 0).unwrap();
                 let dt = from_str(format!("@{}", offset));
                 assert_eq!(dt.unwrap(), time);
             }