diff --git a/lib/addons/gpt.ts b/lib/addons/gpt.ts
index ba450e20..da05683d 100644
--- a/lib/addons/gpt.ts
+++ b/lib/addons/gpt.ts
@@ -6,7 +6,7 @@ import OptableSDK from "../sdk";
 
 declare module "../sdk" {
   export interface OptableSDK {
-    installGPTEventListeners: () => void;
+    installGPTEventListeners: (eventSpec?: GptEventSpec) => void;
     installGPTSecureSignals: (...signals: SecureSignal[]) => void;
   }
 }
diff --git a/lib/addons/try-identify.ts b/lib/addons/try-identify.ts
index 8e4262fb..e24ff7ed 100644
--- a/lib/addons/try-identify.ts
+++ b/lib/addons/try-identify.ts
@@ -2,7 +2,7 @@ import OptableSDK from "../sdk";
 
 declare module "../sdk" {
   export interface OptableSDK {
-    tryIdentifyFromParams: () => void;
+    tryIdentifyFromParams: (key?: string, prefix?: string) => void;
   }
 }