diff --git a/apps/backend/src/prisma-client.tsx b/apps/backend/src/prisma-client.tsx
index fc0f8e208..c2061c504 100644
--- a/apps/backend/src/prisma-client.tsx
+++ b/apps/backend/src/prisma-client.tsx
@@ -217,6 +217,9 @@ class TransactionErrorThatShouldNotBeRetried extends Error {
   }
 }
 
+/**
+ * @deprecated Prisma transactions are slow and lock the database. Use rawQuery with CTEs instead. Ask Konsti if you're confused or think you need transactions.
+ */
 export async function retryTransaction<T>(client: Omit<PrismaClient, "$on">, fn: (tx: PrismaClientTransaction) => Promise<T>, options: { level?: "default" | "serializable" } = {}): Promise<T> {
   // serializable transactions are currently off by default, later we may turn them on
   const enableSerializable = options.level === "serializable";