diff --git a/server/src/services/documentParser.ts b/server/src/services/documentParser.ts
index ba54ceb..a99f6ab 100644
--- a/server/src/services/documentParser.ts
+++ b/server/src/services/documentParser.ts
@@ -1,8 +1,8 @@
 import officeParser from 'officeparser';
 import WordExtractor from 'word-extractor';
 import * as XLSX from 'xlsx';
-import * as PPT from 'ppt';
-import * as CFB from 'cfb';
+import PPT from 'ppt';
+import CFB from 'cfb';
 
 export const GEMINI_NATIVE_TYPES = [
   'application/pdf',
diff --git a/server/src/types/legacy-office.d.ts b/server/src/types/legacy-office.d.ts
index 3f91c0f..16d6c00 100644
--- a/server/src/types/legacy-office.d.ts
+++ b/server/src/types/legacy-office.d.ts
@@ -20,9 +20,15 @@ declare module 'ppt' {
     to_text(pres: PPTPresentation): string[];
   }
 
-  export function readFile(filename: string, opts?: { WTF?: number; dump?: number }): PPTPresentation;
-  export function parse_pptcfb(cfb: CFB.Container, opts?: object): PPTPresentation;
-  export const utils: PPTUtils;
+  interface PPTModule {
+    version: string;
+    readFile(filename: string, opts?: { WTF?: number; dump?: number }): PPTPresentation;
+    parse_pptcfb(cfb: CFBContainer, opts?: object): PPTPresentation;
+    utils: PPTUtils;
+  }
+
+  const PPT: PPTModule;
+  export default PPT;
 }
 
 declare module 'cfb' {
@@ -32,7 +38,7 @@ declare module 'cfb' {
     content?: Buffer;
   }
 
-  interface Container {
+  interface CFBContainer {
     FileIndex: CFBEntry[];
     FullPaths: string[];
   }
@@ -41,6 +47,16 @@ declare module 'cfb' {
     type?: 'file' | 'buffer' | 'base64' | 'binary' | 'array';
   }
 
-  export function read(data: Buffer | string | ArrayBuffer, opts?: ReadOptions): Container;
-  export function parse(data: Buffer | number[]): Container;
+  interface CFBModule {
+    read(data: Buffer | string | ArrayBuffer, opts?: ReadOptions): CFBContainer;
+    parse(data: Buffer | number[]): CFBContainer;
+  }
+
+  const CFB: CFBModule;
+  export default CFB;
+}
+
+// Re-export for global use
+declare global {
+  type CFBContainer = import('cfb').CFBContainer;
 }