diff --git a/src/types/index.js.flow b/src/types/index.js.flow
index 75e2edd2..01a17602 100644
--- a/src/types/index.js.flow
+++ b/src/types/index.js.flow
@@ -78,3 +78,8 @@ declare export function createDraft<T>(base: T): T
  * Optionally a patch-listener can be provided to gather the patches that are needed to construct the object.
  */
 declare export function finishDraft<T>(base: T, listener?: PatchListener): T
+
+declare export function enableES5(): void
+declare export function enableMapSet(): void
+declare export function enablePatches(): void
+declare export function enableAllPlugins(): void