diff --git a/CHANGELOG.md b/CHANGELOG.md
index 07ae0182..7e288f9a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ The file format of it is based on [Keep a Changelog](http://keepachangelog.com/e
 For public Changelog covering all changes done to Pipedrive’s API, webhooks and app extensions platforms, see [public Changelog](https://pipedrive.readme.io/docs/changelog) with discussion area in [Developers Community](https://devcommunity.pipedrive.com/c/documentation/changelog/19).
 
 ## [Unreleased]
+### Fixed
+- Fixed return type for `filesApi.downloadFile` function
 
 ## [30.3.1] - 2025-11-03
 ### Fixed
diff --git a/src/versions/v1/api/files-api.ts b/src/versions/v1/api/files-api.ts
index de3f1a30..5314ac25 100644
--- a/src/versions/v1/api/files-api.ts
+++ b/src/versions/v1/api/files-api.ts
@@ -255,7 +255,7 @@ export const FilesApiAxiosParamCreator = function (configuration?: Configuration
                 baseOptions = configuration.baseOptions;
             }
 
-            const localVarRequestOptions = { method: 'GET', ...baseOptions };
+            const localVarRequestOptions = { method: 'GET', responseType: 'arraybuffer' as const, ...baseOptions };
             const localVarHeaderParameter = {} as any;
             const localVarQueryParameter = {} as any;