diff --git a/packages/scripts/deps.ts b/packages/scripts/deps.ts
index 505de8af4..167b5dc17 100644
--- a/packages/scripts/deps.ts
+++ b/packages/scripts/deps.ts
@@ -1,2 +1,2 @@
 export * as path from "https://deno.land/std@0.208.0/path/mod.ts";
-export * as tsMorph from "https://deno.land/x/ts_morph@21.0.0/mod.ts";
+export * as tsMorph from "https://deno.land/x/ts_morph@21.0.1/mod.ts";
diff --git a/packages/scripts/utils/Memoize.ts b/packages/scripts/utils/Memoize.ts
index 6f094fe7a..f0059830c 100644
--- a/packages/scripts/utils/Memoize.ts
+++ b/packages/scripts/utils/Memoize.ts
@@ -1,11 +1,10 @@
-/** Decorator for memoizing the result of a method or get accessor. */
-export function Memoize(target: any, propertyName: string, descriptor: TypedPropertyDescriptor<any>) {
-  if (descriptor.value != null)
-    descriptor.value = getNewFunction(descriptor.value);
-  else if (descriptor.get != null)
-    descriptor.get = getNewFunction(descriptor.get);
-  else
-    throw new Error("Only put a Memoize decorator on a method or get accessor.");
+/** Decorator for memoizing the result of a method. */
+export function Memoize(target: (...args: any[]) => void) {
+  if (target instanceof Function) {
+    return getNewFunction(target);
+  } else {
+    throw new Error("Not implemented.");
+  }
 }
 
 const weakMap = new WeakMap<object, Map<string, unknown>>();
diff --git a/packages/ts-morph/scripts/generation/main.ts b/packages/ts-morph/scripts/generation/main.ts
index 93dafee77..9acc2555d 100644
--- a/packages/ts-morph/scripts/generation/main.ts
+++ b/packages/ts-morph/scripts/generation/main.ts
@@ -1,4 +1,3 @@
-import { tsMorph } from "../deps.ts";
 import { InspectorFactory } from "../inspectors/mod.ts";
 import { createDeclarationFile } from "./createDeclarationFile.ts";
 import { createForEachStructureChild } from "./createForEachStructureChild.ts";