diff --git a/packages/lib/src/db/db.ts b/packages/lib/src/db/db.ts
index 116d1ab..57f4754 100644
--- a/packages/lib/src/db/db.ts
+++ b/packages/lib/src/db/db.ts
@@ -15,7 +15,7 @@ export function getDatabaseUrl(): string {
 }
 
 if (!process.env.DATABASE_URL) {
-	process.env.DATABASE_URL = getDatabaseUrl();
+	(process.env as Record<string, string | undefined>).DATABASE_URL = getDatabaseUrl();
 }
 
 /**