diff --git a/functions/_middleware.ts b/functions/_middleware.ts
index f750777..38d8eea 100644
--- a/functions/_middleware.ts
+++ b/functions/_middleware.ts
@@ -382,6 +382,10 @@ async function setTheme(context: RequestContext) {
 
 export const onRequest = [
   Sentry.sentryPagesPlugin((context: RequestContext) => ({
+    beforeSend(event) {
+      delete event.request?.cookies;
+      return event;
+    },
     dsn: context.env.FUNCTIONS_DSN,
     release: context.env.COMMIT_SHA,
     sendDefaultPii: true,