diff --git a/lib/src/sql/datetime.rs b/lib/src/sql/datetime.rs
index a4bd471e..cd6871b9 100644
--- a/lib/src/sql/datetime.rs
+++ b/lib/src/sql/datetime.rs
@@ -307,6 +307,24 @@ mod tests {
 		assert_eq!("'2012-04-24T02:55:43.511Z'", format!("{}", out));
 	}
 
+	#[test]
+	fn date_time_timezone_utc_nanoseconds() {
+		let sql = "2012-04-23T18:25:43.5110000Z";
+		let res = datetime_raw(sql);
+		assert!(res.is_ok());
+		let out = res.unwrap().1;
+		assert_eq!("'2012-04-23T18:25:43.511Z'", format!("{}", out));
+	}
+
+	#[test]
+	fn date_time_timezone_utc_sub_nanoseconds() {
+		let sql = "2012-04-23T18:25:43.0000511Z";
+		let res = datetime_raw(sql);
+		assert!(res.is_ok());
+		let out = res.unwrap().1;
+		assert_eq!("'2012-04-23T18:25:43.000051100Z'", format!("{}", out));
+	}
+
 	#[test]
 	fn date_time_illegal_date() {
 		// Hey! There's not a 31st of November!