diff --git a/packages/mobx-react/__tests__/inject.test.tsx b/packages/mobx-react/__tests__/inject.test.tsx
index c2fdeaf85..6f97ac25e 100644
--- a/packages/mobx-react/__tests__/inject.test.tsx
+++ b/packages/mobx-react/__tests__/inject.test.tsx
@@ -296,7 +296,8 @@ describe("inject based context", () => {
         expect(ref.current?.testField).toBe(1)
     })
 
-    test("propTypes and defaultProps are forwarded", () => {
+    // skipping because `propTypes` and `defaultProps` are dropped in React 19
+    test.skip("propTypes and defaultProps are forwarded", () => {
         const msg: Array<string> = []
         const baseError = console.error
         console.error = m => msg.push(m)
diff --git a/packages/mobx-react/__tests__/stateless.test.tsx b/packages/mobx-react/__tests__/stateless.test.tsx
index 9d4ef934d..6ff32d589 100644
--- a/packages/mobx-react/__tests__/stateless.test.tsx
+++ b/packages/mobx-react/__tests__/stateless.test.tsx
@@ -13,7 +13,8 @@ StatelessComp.defaultProps = {
     testProp: "default value for prop testProp"
 }
 
-describe("stateless component with propTypes", () => {
+// skipping because `propTypes` and `defaultProps` are dropped in React 19
+describe.skip("stateless component with propTypes", () => {
     const StatelessCompObserver: React.FunctionComponent<any> = observer(StatelessComp)
 
     test("default property value should be propagated", () => {