diff --git a/.changeset/gold-windows-brake.md b/.changeset/gold-windows-brake.md
new file mode 100644
index 000000000..92b3ebbee
--- /dev/null
+++ b/.changeset/gold-windows-brake.md
@@ -0,0 +1,5 @@
+---
+"mobx": minor
+---
+
+Extend IReactionDisposer with Disposable
diff --git a/packages/mobx/src/core/reaction.ts b/packages/mobx/src/core/reaction.ts
index d0c85b2d2..27f490b8b 100644
--- a/packages/mobx/src/core/reaction.ts
+++ b/packages/mobx/src/core/reaction.ts
@@ -48,7 +48,7 @@ export interface IReactionPublic {
     trace(enterBreakPoint?: boolean): void
 }
 
-export interface IReactionDisposer {
+export interface IReactionDisposer extends Disposable {
     (): void
     [$mobx]: Reaction
 }