diff --git a/server/server.go b/server/server.go
index b8728131f91fcd24e037a33d2f30b9baa65d01cd..ef81c2dfcc028e39317556e739170053c9a976f8 100644
--- a/server/server.go
+++ b/server/server.go
@@ -94,7 +94,8 @@ 	}
 
 	srv := handler.GraphQL(schema,
 		handler.ComplexityLimit(complexity),
-		handler.RecoverFunc(emailRecover))
+		handler.RecoverFunc(emailRecover),
+		handler.UploadMaxSize(1073741824)) // 1 GiB (TODO: configurable?)
 
 	server.router.Handle("/query", srv)
 	if config.Debug {