diff --git a/packages/vue-apollo-composable/package.json b/packages/vue-apollo-composable/package.json
index 85cd071..c0e4cf3 100644
--- a/packages/vue-apollo-composable/package.json
+++ b/packages/vue-apollo-composable/package.json
@@ -37,6 +37,7 @@
   },
   "dependencies": {
     "throttle-debounce": "^2.3.0",
+    "ts-essentials": "^8.1.0",
     "vue-demi": "^0.9.1"
   },
   "peerDependencies": {
diff --git a/packages/vue-apollo-composable/src/useResult.ts b/packages/vue-apollo-composable/src/useResult.ts
index 1b51b4e..be8661a 100644
--- a/packages/vue-apollo-composable/src/useResult.ts
+++ b/packages/vue-apollo-composable/src/useResult.ts
@@ -1,5 +1,6 @@
 import { Ref, computed } from 'vue-demi'
 import { ExtractSingleKey } from './util/ExtractSingleKey'
+import type { DeepNonNullable, DeepRequired } from 'ts-essentials'
 
 export type UseResultReturn<T> = Readonly<Ref<Readonly<T>>>
 
@@ -60,7 +61,7 @@ export function useResult<
 > (
   result: Ref<TResult>,
   defaultValue: TDefaultValue | undefined,
-  pick: (data: TResult) => TReturnValue
+  pick: (data: DeepRequired<DeepNonNullable<TResult>>) => TReturnValue
 ): UseResultReturn<TDefaultValue | TReturnValue>
 
 export function useResult<
@@ -70,14 +71,14 @@ export function useResult<
 > (
   result: Ref<TResult>,
   defaultValue?: TDefaultValue,
-  pick?: (data: TResult) => TReturnValue,
+  pick?: (data: DeepRequired<DeepNonNullable<TResult>>) => TReturnValue,
 ): UseResultReturn<TResult | TResult[keyof TResult] | TDefaultValue | TReturnValue | undefined> {
   return computed(() => {
     const value = result.value
     if (value) {
       if (pick) {
         try {
-          return pick(value)
+          return pick(value as DeepRequired<DeepNonNullable<TResult>>)
         } catch (e) {
           // Silent error
         }
diff --git a/packages/vue-apollo-composable/tests/types/useResult-types.test.ts b/packages/vue-apollo-composable/tests/types/useResult-types.test.ts
index 7b4c8f1..b1de2f0 100644
--- a/packages/vue-apollo-composable/tests/types/useResult-types.test.ts
+++ b/packages/vue-apollo-composable/tests/types/useResult-types.test.ts
@@ -107,12 +107,12 @@ const { result: multiKeyResult } = multiKeyQuery
   const useResult_WithPickFunction = useResult(
     multiKeyResult,
     [] as const,
-    data => data?.otherExample?.__typename,
+    data => data.otherExample.__typename,
   )
 
   assertExactType<
     typeof useResult_WithPickFunction,
-  UseResultReturn<'OtherExample' | [] | undefined>
+  UseResultReturn<'OtherExample' | []>
   >(useResult_WithPickFunction)
 
   if (typeof useResult_WithPickFunction.value === 'string') {
diff --git a/yarn.lock b/yarn.lock
index ccf706f..3711be5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -14918,6 +14918,11 @@ tryer@^1.0.1:
   resolved "https://registry.yarnpkg.com/tryer/-/tryer-1.0.1.tgz#f2c85406800b9b0f74c9f7465b81eaad241252f8"
   integrity sha512-c3zayb8/kWWpycWYg87P71E1S1ZL6b6IJxfb5fvsUgsf0S2MVGaDhDXXjDMpdCpfWXqptc+4mXwmiy1ypXqRAA==
 
+ts-essentials@^8.1.0:
+  version "8.1.0"
+  resolved "https://registry.yarnpkg.com/ts-essentials/-/ts-essentials-8.1.0.tgz#bc982b242db226b84c89477d3d42630ee2954513"
+  integrity sha512-34xALeQADWRYq9kbtprP4KdpTQ3v3BBIs/U4SpaP+C4++B8ijXY5NnILRJLchQVMzw7YBzKuGMUMrI9uT+ALVw==
+
 ts-invariant@^0.4.0:
   version "0.4.4"
   resolved "https://registry.yarnpkg.com/ts-invariant/-/ts-invariant-0.4.4.tgz#97a523518688f93aafad01b0e80eb803eb2abd86"