diff --git a/packages/adapters-db/src/anonymous-feedback-repository.ts b/packages/adapters-db/src/anonymous-feedback-repository.ts
index 9932536..8b7f73e 100644
--- a/packages/adapters-db/src/anonymous-feedback-repository.ts
+++ b/packages/adapters-db/src/anonymous-feedback-repository.ts
@@ -49,9 +49,11 @@ export function createDbAnonymousFeedbackRepository(
     },
 
     async getRateLimitSnapshot(memberId, acceptedSince) {
+      const acceptedSinceIso = acceptedSince.toISOString()
+
       const rows = await db
         .select({
-          acceptedCountSince: sql<string>`count(*) filter (where ${schema.anonymousMessages.createdAt} >= ${acceptedSince})`,
+          acceptedCountSince: sql<string>`count(*) filter (where ${schema.anonymousMessages.createdAt} >= ${acceptedSinceIso}::timestamptz)`,
           lastAcceptedAt: sql<Date | null>`max(${schema.anonymousMessages.createdAt})`
         })
         .from(schema.anonymousMessages)