diff --git a/package.json b/package.json
index a2c282cce..9aac3b215 100644
--- a/package.json
+++ b/package.json
@@ -35,10 +35,10 @@
 	],
 	"devDependencies": {
 		"@sindresorhus/tsconfig": "~0.7.0",
-		"expect-type": "^0.14.2",
+		"expect-type": "^0.15.0",
 		"tsd": "^0.24.1",
-		"typescript": "^4.8.3",
-		"xo": "^0.52.2"
+		"typescript": "^4.8.4",
+		"xo": "^0.52.4"
 	},
 	"xo": {
 		"rules": {
diff --git a/readme.md b/readme.md
index 2d2d814d0..e575a84b8 100644
--- a/readme.md
+++ b/readme.md
@@ -214,7 +214,7 @@ Click the type names for complete docs.
 - [`MultidimensionalArray`](source/multidimensional-array.d.ts) - Create a type that represents a multidimensional array of the given type and dimensions.
 - [`MultidimensionalReadonlyArray`](source/multidimensional-readonly-array.d.ts) - Create a type that represents a multidimensional readonly array of the given type and dimensions.
 - [`ReadonlyTuple`](source/readonly-tuple.d.ts) - Create a type that represents a read-only tuple of the given type and length.
-- [`TupleToUnion`](source/tuple-to-union.d.ts) - Convert a tuple into a union type of its elements.
+- [`TupleToUnion`](source/tuple-to-union.d.ts) - Convert a tuple/array into a union type of its elements.
 
 ### Numeric
 
diff --git a/source/tuple-to-union.d.ts b/source/tuple-to-union.d.ts
index 1db246fb1..b2bdf8965 100644
--- a/source/tuple-to-union.d.ts
+++ b/source/tuple-to-union.d.ts
@@ -1,5 +1,5 @@
 /**
-Convert a tuple into a union type of its elements.
+Convert a tuple/array into a union type of its elements.
 
 This can be useful when you have a fixed set of allowed values and want a type defining only the allowed values, but do not want to repeat yourself.