diff --git a/package.json b/package.json
index 4ecd9f19..263e0e68 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "@rollup/plugin-node-resolve": "^9.0.0",
     "@rollup/plugin-replace": "^2.2.1",
     "@types/hash-sum": "^1.0.0",
-    "@types/jest": "^26.0.0",
+    "@types/jest": "^26.0.16",
     "@types/node": "^14.10.1",
     "@types/puppeteer": "^2.0.0",
     "@typescript-eslint/parser": "^4.1.1",
diff --git a/packages/runtime-core/__tests__/rendererComponent.spec.ts b/packages/runtime-core/__tests__/rendererComponent.spec.ts
index 29a7d076..4c45b90a 100644
--- a/packages/runtime-core/__tests__/rendererComponent.spec.ts
+++ b/packages/runtime-core/__tests__/rendererComponent.spec.ts
@@ -142,7 +142,7 @@ describe('renderer: component', () => {
 
   // #2170
   test('instance.$el should be exposed to watch options', async () => {
-    function returnThis(this: any) {
+    function returnThis(this: any, _arg: any) {
       return this
     }
     const propWatchSpy = jest.fn(returnThis)
diff --git a/packages/runtime-core/__tests__/vnode.spec.ts b/packages/runtime-core/__tests__/vnode.spec.ts
index 5bfde8e5..56f1e7b4 100644
--- a/packages/runtime-core/__tests__/vnode.spec.ts
+++ b/packages/runtime-core/__tests__/vnode.spec.ts
@@ -515,7 +515,7 @@ describe('vnode', () => {
     //   slot content (called during the block node creation) to be missed
     test('element block should track normalized slot children', () => {
       const hoist = createVNode('div')
-      let vnode1
+      let vnode1: any
       const vnode = (openBlock(),
       createBlock('div', null, {
         default: () => {
diff --git a/yarn.lock b/yarn.lock
index 471763f8..de7f4c4e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -869,7 +869,7 @@
   dependencies:
     "@types/istanbul-lib-report" "*"
 
-"@types/jest@26.x", "@types/jest@^26.0.0":
+"@types/jest@26.x":
   version "26.0.15"
   resolved "https://registry.yarnpkg.com/@types/jest/-/jest-26.0.15.tgz#12e02c0372ad0548e07b9f4e19132b834cb1effe"
   integrity sha512-s2VMReFXRg9XXxV+CW9e5Nz8fH2K1aEhwgjUqPPbQd7g95T0laAcvLv032EhFHIa5GHsZ8W7iJEQVaJq6k3Gog==
@@ -877,6 +877,14 @@
     jest-diff "^26.0.0"
     pretty-format "^26.0.0"
 
+"@types/jest@^26.0.16":
+  version "26.0.16"
+  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-26.0.16.tgz#b47abd50f6ed0503f589db8e126fc8eb470cf87c"
+  integrity sha512-Gp12+7tmKCgv9JjtltxUXokohCAEZfpJaEW5tn871SGRp8I+bRWBonQO7vW5NHwnAHe5dd50+Q4zyKuN35i09g==
+  dependencies:
+    jest-diff "^26.0.0"
+    pretty-format "^26.0.0"
+
 "@types/lru-cache@^5.1.0":
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/@types/lru-cache/-/lru-cache-5.1.0.tgz#57f228f2b80c046b4a1bd5cac031f81f207f4f03"