diff --git a/README.md b/README.md
index 7d8b76e..6176b12 100644
--- a/README.md
+++ b/README.md
@@ -75,15 +75,6 @@ Parameters:
 Supports various numeric types: `number`, `Float64Array`, `Float32Array`, `Uint32Array`,
 `Int32Array`, `Uint16Array`, `Int16Array`, `Uint8Array`, `Int8Array`, `Array<number>`.
 
-## Types
-
-Extra types provided for TypeScript:
-
-- `Motion<Value>`: Represents an animatable value with methods:
-  - `update()`: Updates the motion state.
-  - `complete()`: Checks if the motion is complete.
-  - `interpolate(t: number)`: Interpolates the motion value at a given time t.
-
 ## Cancelling Animations
 
 You can cancel ongoing animations using an `AbortSignal`:
diff --git a/modules/spring.js b/modules/spring.js
index 2945e73..0783c5c 100644
--- a/modules/spring.js
+++ b/modules/spring.js
@@ -37,6 +37,9 @@ function singlespring(current, destination, damping, stiffness, precision) {
           velocity = tuple[1];
         }
     },
+    destination(v) {
+      destination = v;
+    },
     complete() {
       if (velocity !== 0 || current !== destination) return false;
       return true;
@@ -68,6 +71,9 @@ function multispring(current, destination, damping, stiffness, precision) {
           }
         }
     },
+    destination(v) {
+      destination = v;
+    },
     complete() {
       for (let i = 0; i < current.length; i++) {
         if (velocity[i] !== 0 || current[i] !== destination[i]) return false;
diff --git a/oscillation.d.ts b/oscillation.d.ts
index f39046a..e71767a 100644
--- a/oscillation.d.ts
+++ b/oscillation.d.ts
@@ -50,6 +50,7 @@ export function motion<List extends [Motion<any>, ...Motion<any>[]]>(
 
 export type Motion<Value> = {
   update(n: number): void;
+  destination(v: Value): void;
   complete(): boolean;
   interpolate(t: number): Value;
 };
diff --git a/package.json b/package.json
index 6d6edd0..4f7ac2c 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "oscillation",
   "description": "An animation library",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "license": "ISC",
   "author": "Oleksii Raspopov",
   "repository": "UnknownPrinciple/oscillation",