diff --git a/CHANGELOG.md b/CHANGELOG.md
index d5e0f0a1..6882237e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## 6.0.33
 - Send Push Notification API
-
+- Fix TypeScript types for initSdk and logEvent
 
 ## 6.0.31
 - In-App purchase validation
diff --git a/index.d.ts b/index.d.ts
index ce4b2292..7062b963 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -62,9 +62,10 @@ declare module "react-native-appsflyer" {
         onInstallConversionData(callback: (data: ConversionData) => any): () => void;
         onInstallConversionFailure(callback: (data: ConversionData) => any): () => void;
         onAppOpenAttribution(callback: (data: any) => any): () => void;
-
-        initSdk(options: InitSDKOptions, successC?: SuccessCB, errorC?: ErrorCB): Response<string>
-        logEvent(eventName: string, eventValues: object, successC?: SuccessCB, errorC?: ErrorCB): Response<string>
+        initSdk(options: InitSDKOptions): Promise<string>;
+        initSdk(options: InitSDKOptions, successC: SuccessCB, errorC: ErrorCB): void;
+        logEvent(eventName: string, eventValues: object): Promise<string>;
+        logEvent(eventName: string, eventValues: object, successC: SuccessCB, errorC: ErrorCB): void;
         setUserEmails(options: SetEmailsOptions, successC: SuccessCB, errorC: ErrorCB): void
         setAdditionalData(additionalData: object, successC?: SuccessCB): void
         getAppsFlyerUID(callback: (error: Error, uid: string) => any): void