diff --git a/packages/excel-builder-vanilla-types/dist/index.d.ts b/packages/excel-builder-vanilla-types/dist/index.d.ts
index 38b7253..b346017 100644
--- a/packages/excel-builder-vanilla-types/dist/index.d.ts
+++ b/packages/excel-builder-vanilla-types/dist/index.d.ts
@@ -1,7 +1,5 @@
 // Generated by dts-bundle-generator v9.5.1
 
-import { ZipOptions } from 'fflate';
-
 export type XMLNodeOption = {
 	attributes?: {
 		[key: string]: any;
@@ -470,6 +468,40 @@ export interface ChartOptions {
 		showSeriesName?: boolean;
 	};
 }
+/**
+ * Options for compressing data into a DEFLATE format
+ */
+export interface DeflateOptions {
+	/**
+	 * The level of compression to use, ranging from 0-9 (default: 6).
+	 * 0 will store the data without compression.
+	 * 1 is fastest but compresses the worst, 9 is slowest but compresses the best.
+	 */
+	level?: 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9;
+	/**
+	 * The memory level to use, ranging from 0-12. Increasing this increases speed and compression ratio at the cost of memory.
+	 * The default value is automatically determined based on the size of the input data.
+	 */
+	mem?: 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12;
+	/** A buffer containing common byte sequences in the input data that can be used to significantly improve compression ratios.*/
+	dictionary?: Uint8Array;
+}
+/** Attributes for files added to a ZIP archive object */
+export interface ZipAttributes {
+	/** The operating system of origin for this file, 0 (the default) */
+	os?: number;
+	/** The file's attributes*/
+	attrs?: number;
+	/** Extra metadata to add to the file. */
+	extra?: Record<number, Uint8Array>;
+	/** The comment to attach to the file. */
+	comment?: string;
+	/** When the file was last modified. Defaults to the current time. */
+	mtime?: Date | string | number;
+}
+/** Options for creating a ZIP archive */
+export interface ZipOptions extends DeflateOptions, ZipAttributes {
+}
 /**
  * @module Excel/Util
  */
diff --git a/packages/excel-builder-vanilla-types/package.json b/packages/excel-builder-vanilla-types/package.json
index edb42f8..b6b4279 100644
--- a/packages/excel-builder-vanilla-types/package.json
+++ b/packages/excel-builder-vanilla-types/package.json
@@ -48,8 +48,5 @@
   "funding": {
     "type": "ko_fi",
     "url": "https://ko-fi.com/ghiscoding"
-  },
-  "dependencies": {
-    "fflate": "catalog:"
   }
 }
diff --git a/packages/excel-builder-vanilla/src/factory.ts b/packages/excel-builder-vanilla/src/factory.ts
index 280895c..209dc5e 100644
--- a/packages/excel-builder-vanilla/src/factory.ts
+++ b/packages/excel-builder-vanilla/src/factory.ts
@@ -1,6 +1,7 @@
-import { strToU8, type ZipOptions, zip } from 'fflate';
+import { strToU8, zip } from 'fflate';
 
 import { Workbook } from './Excel/Workbook.js';
+import type { ZipOptions } from './interfaces.js';
 
 type InferOutputByType<T extends 'Blob' | 'Uint8Array'> = T extends 'Blob' ? Blob : T extends 'Uint8Array' ? Uint8Array : any;
 
diff --git a/packages/excel-builder-vanilla/src/interfaces.ts b/packages/excel-builder-vanilla/src/interfaces.ts
index bc5230a..1f0ac9d 100644
--- a/packages/excel-builder-vanilla/src/interfaces.ts
+++ b/packages/excel-builder-vanilla/src/interfaces.ts
@@ -322,3 +322,41 @@ export interface ChartOptions {
     showSeriesName?: boolean;
   };
 }
+
+// --
+// inlined fflate interface to avoid direct dependency in the @excel-builder-vanilla/types package
+/**
+ * Options for compressing data into a DEFLATE format
+ */
+export interface DeflateOptions {
+  /**
+   * The level of compression to use, ranging from 0-9 (default: 6).
+   * 0 will store the data without compression.
+   * 1 is fastest but compresses the worst, 9 is slowest but compresses the best.
+   */
+  level?: 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9;
+  /**
+   * The memory level to use, ranging from 0-12. Increasing this increases speed and compression ratio at the cost of memory.
+   * The default value is automatically determined based on the size of the input data.
+   */
+  mem?: 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12;
+  /** A buffer containing common byte sequences in the input data that can be used to significantly improve compression ratios.*/
+  dictionary?: Uint8Array;
+}
+
+/** Attributes for files added to a ZIP archive object */
+export interface ZipAttributes {
+  /** The operating system of origin for this file, 0 (the default) */
+  os?: number;
+  /** The file's attributes*/
+  attrs?: number;
+  /** Extra metadata to add to the file. */
+  extra?: Record<number, Uint8Array>;
+  /** The comment to attach to the file. */
+  comment?: string;
+  /** When the file was last modified. Defaults to the current time. */
+  mtime?: Date | string | number;
+}
+
+/** Options for creating a ZIP archive */
+export interface ZipOptions extends DeflateOptions, ZipAttributes {}
diff --git a/packages/excel-builder-vanilla/src/streaming.ts b/packages/excel-builder-vanilla/src/streaming.ts
index 758a676..e724f9e 100644
--- a/packages/excel-builder-vanilla/src/streaming.ts
+++ b/packages/excel-builder-vanilla/src/streaming.ts
@@ -1,7 +1,8 @@
-import { strToU8, type ZipOptions, zipSync } from 'fflate';
+import { strToU8, zipSync } from 'fflate';
 
 import type { Workbook } from './Excel/Workbook.js';
 import { base64ToUint8Array } from './factory.js';
+import type { ZipOptions } from './interfaces.js';
 
 export interface ExcelFileStreamOptions {
   chunkSize?: number;
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index bde9471..de9b85f 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -14,7 +14,7 @@ catalogs:
       version: 2.0.1
     remove-glob:
       specifier: ^1.2.1
-      version: 1.2.0
+      version: 1.2.1
     sass:
       specifier: ^1.99.0
       version: 1.99.0
@@ -113,11 +113,7 @@ importers:
         specifier: 'catalog:'
         version: 8.0.13(@types/node@25.9.1)(esbuild@0.27.4)(sass@1.99.0)(yaml@2.9.0)
 
-  packages/excel-builder-vanilla-types:
-    dependencies:
-      fflate:
-        specifier: 'catalog:'
-        version: 0.8.3
+  packages/excel-builder-vanilla-types: {}
 
 packages: