diff --git a/package.json b/package.json
index 922478bf6..8cbc2708a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "graphql-scalars",
-  "version": "1.4.1",
+  "version": "1.5.0",
   "description": "A collection of scalar types not included in base GraphQL.",
   "repository": {
     "type": "git",
@@ -51,7 +51,7 @@
     "bob-the-bundler": "1.1.0",
     "eslint": "7.13.0",
     "eslint-config-prettier": "6.15.0",
-    "eslint-config-standard": "14.1.1",
+    "eslint-config-standard": "16.0.2",
     "eslint-plugin-import": "2.22.1",
     "eslint-plugin-node": "11.1.0",
     "eslint-plugin-promise": "4.2.1",
diff --git a/src/RegularExpression.ts b/src/RegularExpression.ts
index fdb2b63a6..320247082 100644
--- a/src/RegularExpression.ts
+++ b/src/RegularExpression.ts
@@ -12,7 +12,7 @@ export class RegularExpression extends GraphQLScalarType {
     regex: RegExp,
     options: RegularExpressionOptions = {},
   ) {
-    const REGEX = /*#__PURE__*/ new RegExp(regex);
+    const REGEX = /*#__PURE__*/ regex;
     const errorMessage: RegularExpressionErrorMessageFn = options.errorMessage
       ? options.errorMessage
       : (r, v) => `Value does not match the regular expression ${r}: ${v}`;
diff --git a/src/scalars/ObjectID.ts b/src/scalars/ObjectID.ts
index 7b8b3b5ba..74b28cdfe 100644
--- a/src/scalars/ObjectID.ts
+++ b/src/scalars/ObjectID.ts
@@ -1,6 +1,6 @@
 import { Kind, GraphQLError, GraphQLScalarType, ValueNode } from 'graphql';
 
-const MONGODB_OBJECTID_REGEX = /*#__PURE__*/ new RegExp(/^[A-Fa-f0-9]{24}$/);
+const MONGODB_OBJECTID_REGEX = /*#__PURE__*/ /^[A-Fa-f0-9]{24}$/;
 
 export const GraphQLObjectID = /*#__PURE__*/ new GraphQLScalarType({
   name: 'ObjectID',
diff --git a/src/scalars/PostalCode.ts b/src/scalars/PostalCode.ts
index 16493c81c..24ce0b65d 100644
--- a/src/scalars/PostalCode.ts
+++ b/src/scalars/PostalCode.ts
@@ -32,23 +32,23 @@ import { Kind, GraphQLError, GraphQLScalarType } from 'graphql';
 
 // prettier-ignore
 const POSTAL_CODE_REGEXES = [
-  /* US */ /*#__PURE__*/new RegExp(/^\d{5}([-]?\d{4})?$/),
-  /* UK */ /*#__PURE__*/new RegExp(/^(GIR|[A-Z]\d[A-Z\d]??|[A-Z]{2}\d[A-Z\d]??)[ ]??(\d[A-Z]{2})$/),
-  /* DE */ /*#__PURE__*/new RegExp(/\b((?:0[1-46-9]\d{3})|(?:[1-357-9]\d{4})|(?:[4][0-24-9]\d{3})|(?:[6][013-9]\d{3}))\b/),
-  /* CA */ /*#__PURE__*/new RegExp(/^([ABCEGHJKLMNPRSTVXY]\d[ABCEGHJKLMNPRSTVWXYZ]) {0,1}(\d[ABCEGHJKLMNPRSTVWXYZ]\d)$/),
-  /* FR */ /*#__PURE__*/new RegExp(/^(F-)?((2[A|B])|[0-9]{2})[0-9]{3}$/),
-  /* IT */ /*#__PURE__*/new RegExp(/^(V-|I-)?[0-9]{5}$/),
-  /* AU */ /*#__PURE__*/new RegExp(/^(0[289][0-9]{2})|([1345689][0-9]{3})|(2[0-8][0-9]{2})|(290[0-9])|(291[0-4])|(7[0-4][0-9]{2})|(7[8-9][0-9]{2})$/),
-  /* NL */ /*#__PURE__*/new RegExp(/^[1-9][0-9]{3}\s?([a-zA-Z]{2})?$/),
-  /* ES */ /*#__PURE__*/new RegExp(/^([1-9]{2}|[0-9][1-9]|[1-9][0-9])[0-9]{3}$/),
-  /* DK */ /*#__PURE__*/new RegExp(/^([D|d][K|k]( |-))?[1-9]{1}[0-9]{3}$/),
-  /* SE */ /*#__PURE__*/new RegExp(/^(s-|S-){0,1}[0-9]{3}\s?[0-9]{2}$/),
-  /* BE */ /*#__PURE__*/new RegExp(/^[1-9]{1}[0-9]{3}$/),
-  /* IN */ /*#__PURE__*/new RegExp(/^\d{6}$/),
-  /* AT */ /*#__PURE__*/new RegExp(/^\d{4}$/),
-  /* PT */ /*#__PURE__*/new RegExp(/^\d{4}([\-]\d{3})?$/),
-  /* CH */ /*#__PURE__*/new RegExp(/^\d{4}$/),
-  /* LU */ /*#__PURE__*/new RegExp(/^\d{4}$/),
+  /* US */ /*#__PURE__*//^\d{5}([-]?\d{4})?$/,
+  /* UK */ /*#__PURE__*//^(GIR|[A-Z]\d[A-Z\d]??|[A-Z]{2}\d[A-Z\d]??)[ ]??(\d[A-Z]{2})$/,
+  /* DE */ /*#__PURE__*//\b((?:0[1-46-9]\d{3})|(?:[1-357-9]\d{4})|(?:[4][0-24-9]\d{3})|(?:[6][013-9]\d{3}))\b/,
+  /* CA */ /*#__PURE__*//^([ABCEGHJKLMNPRSTVXY]\d[ABCEGHJKLMNPRSTVWXYZ]) {0,1}(\d[ABCEGHJKLMNPRSTVWXYZ]\d)$/,
+  /* FR */ /*#__PURE__*//^(F-)?((2[A|B])|[0-9]{2})[0-9]{3}$/,
+  /* IT */ /*#__PURE__*//^(V-|I-)?[0-9]{5}$/,
+  /* AU */ /*#__PURE__*//^(0[289][0-9]{2})|([1345689][0-9]{3})|(2[0-8][0-9]{2})|(290[0-9])|(291[0-4])|(7[0-4][0-9]{2})|(7[8-9][0-9]{2})$/,
+  /* NL */ /*#__PURE__*//^[1-9][0-9]{3}\s?([a-zA-Z]{2})?$/,
+  /* ES */ /*#__PURE__*//^([1-9]{2}|[0-9][1-9]|[1-9][0-9])[0-9]{3}$/,
+  /* DK */ /*#__PURE__*//^([D|d][K|k]( |-))?[1-9]{1}[0-9]{3}$/,
+  /* SE */ /*#__PURE__*//^(s-|S-){0,1}[0-9]{3}\s?[0-9]{2}$/,
+  /* BE */ /*#__PURE__*//^[1-9]{1}[0-9]{3}$/,
+  /* IN */ /*#__PURE__*//^\d{6}$/,
+  /* AT */ /*#__PURE__*//^\d{4}$/,
+  /* PT */ /*#__PURE__*//^\d{4}([\-]\d{3})?$/,
+  /* CH */ /*#__PURE__*//^\d{4}$/,
+  /* LU */ /*#__PURE__*//^\d{4}$/,
 ];
 
 function _testPostalCode(postalCode: string) {