diff --git a/package.json b/package.json
index e9e49ff..e4e4010 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@ztimson/utils",
-	"version": "0.24.5",
+	"version": "0.24.6",
 	"description": "Utility library",
 	"author": "Zak Timson",
 	"license": "MIT",
diff --git a/src/types.ts b/src/types.ts
index 3ea79bb..4aa7fca 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -18,3 +18,10 @@
 export function typeKeys<T extends object>() {
 	return Object.keys(<T>{}) as Array<keyof T>;
 }
+
+/**
+ * Mark all properties as writable
+ */
+type Writable<T> = {
+	-readonly [P in keyof T]: T[P]
+};