diff --git a/package-lock.json b/package-lock.json
index bbeee338..c56c39ca 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -35,7 +35,7 @@
 				"semantic-release": "19.0.5",
 				"ts-jest": "28.0.8",
 				"ts-node": "10.9.1",
-				"typescript": "4.7.4"
+				"typescript": "4.8.2"
 			}
 		},
 		"node_modules/@ampproject/remapping": {
@@ -14387,9 +14387,9 @@
 			}
 		},
 		"node_modules/typescript": {
-			"version": "4.7.4",
-			"resolved": "https://registry.npmjs.org/typescript/-/typescript-4.7.4.tgz",
-			"integrity": "sha512-C0WQT0gezHuw6AdY1M2jxUO83Rjf0HP7Sk1DtXj6j1EwkQNZrHAg2XPWlq62oqEhYvONq5pkC2Y9oPljWToLmQ==",
+			"version": "4.8.2",
+			"resolved": "https://registry.npmjs.org/typescript/-/typescript-4.8.2.tgz",
+			"integrity": "sha512-C0I1UsrrDHo2fYI5oaCGbSejwX4ch+9Y5jTQELvovfmFkK3HHSZJB8MSJcWLmCUBzQBchCrZ9rMRV6GuNrvGtw==",
 			"dev": true,
 			"bin": {
 				"tsc": "bin/tsc",
@@ -25201,9 +25201,9 @@
 			"dev": true
 		},
 		"typescript": {
-			"version": "4.7.4",
-			"resolved": "https://registry.npmjs.org/typescript/-/typescript-4.7.4.tgz",
-			"integrity": "sha512-C0WQT0gezHuw6AdY1M2jxUO83Rjf0HP7Sk1DtXj6j1EwkQNZrHAg2XPWlq62oqEhYvONq5pkC2Y9oPljWToLmQ==",
+			"version": "4.8.2",
+			"resolved": "https://registry.npmjs.org/typescript/-/typescript-4.8.2.tgz",
+			"integrity": "sha512-C0I1UsrrDHo2fYI5oaCGbSejwX4ch+9Y5jTQELvovfmFkK3HHSZJB8MSJcWLmCUBzQBchCrZ9rMRV6GuNrvGtw==",
 			"dev": true
 		},
 		"uglify-js": {
diff --git a/package.json b/package.json
index c72b90e7..156db210 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
 		"semantic-release": "19.0.5",
 		"ts-jest": "28.0.8",
 		"ts-node": "10.9.1",
-		"typescript": "4.7.4"
+		"typescript": "4.8.2"
 	},
 	"jest": {
 		"preset": "ts-jest",
diff --git a/src/valueRules/enum/enum.ts b/src/valueRules/enum/enum.ts
index 8a1aae26..688a0576 100644
--- a/src/valueRules/enum/enum.ts
+++ b/src/valueRules/enum/enum.ts
@@ -8,17 +8,20 @@ export class InvalidEnumError<T> extends BaseError {
 
 type Values<T> = T[keyof T]
 
-export function isEnum<Output>(enumerator: Output, input: unknown): input is Values<Output> {
+export function isEnum<Output extends { [s: string]: unknown }>(
+	enumerator: Output,
+	input: unknown
+): input is Values<Output> {
 	const enumValues = Object.values(enumerator)
 	return enumValues.includes(input)
 }
 
-export function enumerated<Output>(enumerator: Output) {
+export function enumerated<Output extends { [s: string]: unknown }>(enumerator: Output) {
 	return (input: unknown) => {
 		if (isEnum(enumerator, input)) {
 			return input as Values<Output>
 		}
 		const enumValues = Object.values(enumerator)
-		throw new InvalidEnumError<Values<Output>>(enumValues)
+		throw new InvalidEnumError(enumValues)
 	}
 }