diff --git a/package.json b/package.json
index 0739ed8..7675ef8 100644
--- a/package.json
+++ b/package.json
@@ -52,18 +52,18 @@
 	],
 	"devDependencies": {
 		"@sindresorhus/tsconfig": "^3.0.1",
-		"@types/jsdom": "^20.0.0",
-		"@types/node": "^18.11.0",
+		"@types/jsdom": "^21.1.1",
+		"@types/node": "^20.2.5",
 		"@types/zen-observable": "^0.8.3",
-		"ava": "^4.3.3",
+		"ava": "^5.3.0",
 		"del-cli": "^5.0.0",
 		"jsdom": "^20.0.1",
-		"rxjs": "^7.5.7",
+		"rxjs": "^7.8.1",
 		"tempy": "^3.0.0",
 		"ts-node": "^10.9.1",
-		"typescript": "~4.8.4",
-		"xo": "^0.52.4",
-		"zen-observable": "^0.8.15"
+		"typescript": "^5.0.4",
+		"xo": "^0.54.2",
+		"zen-observable": "^0.10.0"
 	},
 	"sideEffects": false,
 	"ava": {
diff --git a/source/index.ts b/source/index.ts
index 65b579b..07528b2 100644
--- a/source/index.ts
+++ b/source/index.ts
@@ -105,20 +105,34 @@ function is(value: unknown): TypeName {
 	}
 
 	switch (typeof value) {
-		case 'undefined':
+		case 'undefined': {
 			return 'undefined';
-		case 'string':
+		}
+
+		case 'string': {
 			return 'string';
-		case 'number':
+		}
+
+		case 'number': {
 			return Number.isNaN(value) ? 'NaN' : 'number';
-		case 'boolean':
+		}
+
+		case 'boolean': {
 			return 'boolean';
-		case 'function':
+		}
+
+		case 'function': {
 			return 'Function';
-		case 'bigint':
+		}
+
+		case 'bigint': {
 			return 'bigint';
-		case 'symbol':
+		}
+
+		case 'symbol': {
 			return 'symbol';
+		}
+
 		default:
 	}
 
@@ -179,6 +193,7 @@ is.array = <T = unknown>(value: unknown, assertion?: (value: T) => value is T):
 		return true;
 	}
 
+	// eslint-disable-next-line @typescript-eslint/no-unsafe-argument
 	return value.every(element => assertion(element));
 };
 
@@ -251,6 +266,7 @@ is.sharedArrayBuffer = isObjectOfType<SharedArrayBuffer>('SharedArrayBuffer');
 
 is.dataView = isObjectOfType<DataView>('DataView');
 
+// eslint-disable-next-line @typescript-eslint/no-unsafe-argument
 is.enumCase = <T = unknown>(value: unknown, targetEnum: T): boolean => Object.values(targetEnum as any).includes(value as string);
 
 is.directInstanceOf = <T>(instance: unknown, class_: Class<T>): instance is T => Object.getPrototypeOf(instance) === class_.prototype;
diff --git a/test/test.ts b/test/test.ts
index 5f57ab9..d686439 100644
--- a/test/test.ts
+++ b/test/test.ts
@@ -603,7 +603,7 @@ const testType = (t: ExecutionContext, type: string, exclude?: string[]) => {
 
 		for (const fixture of fixtures) {
 			assertIs(testIs(fixture), `Value: ${inspect(fixture)}`);
-			const valueType = typeDescription ? typeDescription : typename;
+			const valueType = typeDescription ?? typename;
 
 			if (isTypeUnderTest) {
 				t.notThrows(() => {
@@ -1611,6 +1611,7 @@ test('is.any', t => {
 	t.false(is.any([is.boolean, is.number], 'unicorns', [], new Map()));
 
 	t.throws(() => {
+		// eslint-disable-next-line @typescript-eslint/no-unsafe-argument
 		is.any(null as any, true);
 	});
 
@@ -1635,6 +1636,7 @@ test('is.any', t => {
 	});
 
 	t.throws(() => {
+		// eslint-disable-next-line @typescript-eslint/no-unsafe-argument
 		assert.any(null as any, true);
 	});
 
@@ -1673,6 +1675,7 @@ test('is.all', t => {
 	t.true(is.all(is.array, ['1'], ['2']));
 
 	t.throws(() => {
+		// eslint-disable-next-line @typescript-eslint/no-unsafe-argument
 		is.all(null as any, true);
 	});
 
@@ -1697,6 +1700,7 @@ test('is.all', t => {
 	});
 
 	t.throws(() => {
+		// eslint-disable-next-line @typescript-eslint/no-unsafe-argument
 		assert.all(null as any, true);
 	});