diff --git a/src/schemas.ts b/src/schemas.ts
index 3a5471c..b2155f1 100644
--- a/src/schemas.ts
+++ b/src/schemas.ts
@@ -1,7 +1,7 @@
 import { boolean, date, define, is, number, object, string } from 'superstruct';
 
 const TIMESTAMP_REGEX =
-  /^([0-9]+)-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])[Tt]([01][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9]|60)(\.[0-9]+)?(([Zz])|([\+|\-]([01][0-9]|2[0-3]):[0-5][0-9]))$/g;
+  /^([0-9]+)-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])[Tt]([01][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9]|60)(\.[0-9]+)?(([Zz])|([\+|\-]([01][0-9]|2[0-3]):[0-5][0-9]))$/;
 
 const date_schema = date();
 export const string_schema = string();