diff --git a/src/rageshake/rageshake.ts b/src/rageshake/rageshake.ts
index 261cef51f5..aa80e463fb 100644
--- a/src/rageshake/rageshake.ts
+++ b/src/rageshake/rageshake.ts
@@ -500,6 +500,11 @@ export function init(setUpPersistence = true): Promise<void> {
     global.mx_rage_logger = new ConsoleLogger();
     global.mx_rage_logger.monkeyPatch(window.console);
 
+    // log unhandled rejections in the rageshake
+    window.addEventListener("unhandledrejection", (event) => {
+        global.mx_rage_logger.log("error", `Unhandled promise rejection: ${event.reason}`);
+    });
+
     if (setUpPersistence) {
         return tryInitStorage();
     }