diff --git a/packages/lib/.changeset/wet-dots-draw.md b/packages/lib/.changeset/wet-dots-draw.md
new file mode 100644
index 0000000..d306a23
--- /dev/null
+++ b/packages/lib/.changeset/wet-dots-draw.md
@@ -0,0 +1,5 @@
+---
+'opticks': patch
+---
+
+fix: Exports ts type ActivateNotificationPayload
diff --git a/packages/lib/src/integrations/optimizely.ts b/packages/lib/src/integrations/optimizely.ts
index e7bea7d..17f1e43 100644
--- a/packages/lib/src/integrations/optimizely.ts
+++ b/packages/lib/src/integrations/optimizely.ts
@@ -151,10 +151,10 @@ export enum ExperimentType {
  *
  * It would be best if Opticks abstracts this difference from the client in future versions.
  */
-interface ActivateNotificationPayload extends ListenerPayload {
+export interface ActivateNotificationPayload extends ListenerPayload {
   type: ExperimentType
   decisionInfo: {
-    experimentKey: ToggleIdType
+    flagKey: ToggleIdType
     variationKey: VariantType
   }
 }