diff --git a/packages/animated/src/withAnimated.tsx b/packages/animated/src/withAnimated.tsx
index d26fa6166..f2fcdf6cb 100644
--- a/packages/animated/src/withAnimated.tsx
+++ b/packages/animated/src/withAnimated.tsx
@@ -68,6 +68,7 @@ export const withAnimated = (Component: any, host: HostConfig) => {
 
     const observerRef = useRef<PropsObserver>(null)
     useIsomorphicLayoutEffect(() => {
+      // @ts-expect-error useRef immutable in 18.3 types
       observerRef.current = observer
 
       // Observe the latest dependencies.
diff --git a/packages/shared/src/hooks/useMemoOne.ts b/packages/shared/src/hooks/useMemoOne.ts
index a06b84d05..2ceac60a6 100644
--- a/packages/shared/src/hooks/useMemoOne.ts
+++ b/packages/shared/src/hooks/useMemoOne.ts
@@ -33,6 +33,7 @@ export function useMemoOne<T>(getResult: () => T, inputs?: any[]): T {
   }
 
   useEffect(() => {
+    // @ts-expect-error useRef immutable in 18.3 types
     committed.current = cache
     if (prevCache == initial) {
       initial.inputs = initial.result = undefined