diff --git a/deno.lock b/deno.lock
index fad9a78..f1cacef 100644
--- a/deno.lock
+++ b/deno.lock
@@ -2,9 +2,14 @@
   "version": "3",
   "packages": {
     "specifiers": {
+      "npm:@types/node": "npm:@types/node@18.16.19",
       "npm:chalk@5": "npm:chalk@5.3.0"
     },
     "npm": {
+      "@types/node@18.16.19": {
+        "integrity": "sha512-IXl7o+R9iti9eBW4Wg2hx1xQDig183jj7YLn8F7udNceyfkbn1ZxmzZXuak20gR40D7pIkIY1kYGx5VIGbaHKA==",
+        "dependencies": {}
+      },
       "chalk@5.3.0": {
         "integrity": "sha512-dLitG79d+GV1Nb/VYcCDFivJeK1hiukt9QjRNVOsUtTy1rR1YJsmpGGTZ3qJos+uw7WmWF4wUwBd9jxjocFC2w==",
         "dependencies": {}
diff --git a/types/procreate-swatches.d.ts b/types/procreate-swatches.d.ts
index 7833eca..d2e5c81 100644
--- a/types/procreate-swatches.d.ts
+++ b/types/procreate-swatches.d.ts
@@ -1,9 +1,11 @@
+import type { Buffer } from "node:buffer";
+
 type ColorSpace = "rgb" | "hsl" | "hsv" | "hwb" | "xyz" | "lab" | "lch";
 type Colors = [number[], ColorSpace][];
 
 export function readSwatchesFile(
   data: string | Uint8Array | ArrayBuffer | Blob,
-  colorSpace?: ColorSpace
+  colorSpace?: ColorSpace,
 ): Promise<{
   name: string;
   colors: Colors;
@@ -21,11 +23,11 @@ type SwatchReturnType = {
 };
 
 export function createSwatchesFile<
-  F extends keyof SwatchReturnType | undefined = undefined
+  F extends keyof SwatchReturnType | undefined = undefined,
 >(
   name: string,
   colors: Colors,
-  format?: F
+  format?: F,
 ): Promise<F extends keyof SwatchReturnType ? SwatchReturnType[F] : Uint8Array>;
 
 interface ProcreateSwatchesError extends Error {