diff --git a/packages/jest-runtime/src/index.ts b/packages/jest-runtime/src/index.ts
index 8122804b7032..0b6e7316a3aa 100644
--- a/packages/jest-runtime/src/index.ts
+++ b/packages/jest-runtime/src/index.ts
@@ -860,14 +860,27 @@ class Runtime {
     this._transitiveShouldMock.clear();
     this._virtualMocks.clear();
     this._cacheFS.clear();
+    this._unmockList = undefined;
 
     this._sourceMapRegistry.clear();
 
     this._fileTransforms.clear();
     this.jestObjectCaches.clear();
+    // @ts-ignore
+    this._scriptTransformer = undefined;
 
     this._v8CoverageResult = [];
+    this._v8CoverageInstrumenter = undefined;
     this._moduleImplementation = undefined;
+
+    // @ts-ignore
+    this._config = undefined;
+    // @ts-ignore
+    this._coverageOptions = undefined;
+    // @ts-ignore
+    this._environment = undefined;
+    // @ts-ignore
+    this._resolver = undefined;
   }
 
   private _resolveModule(from: Config.Path, to?: string) {