diff --git a/packages/opentelemetry-instrumentation-fetch/src/fetch.ts b/packages/opentelemetry-instrumentation-fetch/src/fetch.ts
index 5d107027d7..eefcdf5d08 100644
--- a/packages/opentelemetry-instrumentation-fetch/src/fetch.ts
+++ b/packages/opentelemetry-instrumentation-fetch/src/fetch.ts
@@ -67,9 +67,7 @@ export interface FetchInstrumentationConfig extends InstrumentationConfig {
 /**
  * This class represents a fetch plugin for auto instrumentation
  */
-export class FetchInstrumentation extends InstrumentationBase<
-  Promise<Response>
-> {
+export class FetchInstrumentation extends InstrumentationBase {
   readonly component: string = 'fetch';
   readonly version: string = VERSION;
   moduleName = this.component;
@@ -84,7 +82,7 @@ export class FetchInstrumentation extends InstrumentationBase<
     );
   }
 
-  init() {}
+  protected init() {}
 
   private _getConfig(): FetchInstrumentationConfig {
     return this._config;
diff --git a/packages/opentelemetry-instrumentation-grpc/src/grpc-js/index.ts b/packages/opentelemetry-instrumentation-grpc/src/grpc-js/index.ts
index 0cf2114891..d55ba11d22 100644
--- a/packages/opentelemetry-instrumentation-grpc/src/grpc-js/index.ts
+++ b/packages/opentelemetry-instrumentation-grpc/src/grpc-js/index.ts
@@ -69,7 +69,8 @@ export class GrpcJsInstrumentation extends InstrumentationBase {
     this._config = Object.assign({}, config);
   }
 
-  init() {
+  // use InstrumentationNodeModuleDefinition<any>[] to avoid leaking grpc types
+  protected init(): InstrumentationNodeModuleDefinition<any>[] {
     return [
       new InstrumentationNodeModuleDefinition<typeof grpcJs>(
         '@grpc/grpc-js',
diff --git a/packages/opentelemetry-instrumentation-grpc/src/grpc/index.ts b/packages/opentelemetry-instrumentation-grpc/src/grpc/index.ts
index 87486ef157..3be586b8bb 100644
--- a/packages/opentelemetry-instrumentation-grpc/src/grpc/index.ts
+++ b/packages/opentelemetry-instrumentation-grpc/src/grpc/index.ts
@@ -51,9 +51,7 @@ import { AttributeNames } from '../enums/AttributeNames';
  */
 let grpcClient: typeof grpcTypes;
 
-export class GrpcNativeInstrumentation extends InstrumentationBase<
-  typeof grpcTypes
-> {
+export class GrpcNativeInstrumentation extends InstrumentationBase {
   constructor(
     protected override _config: GrpcInstrumentationConfig & InstrumentationConfig = {},
     name: string,
@@ -68,7 +66,8 @@ export class GrpcNativeInstrumentation extends InstrumentationBase<
     this._config = Object.assign({}, config);
   }
 
-  init() {
+  // use InstrumentationNodeModuleDefinition<any>[] to avoid leaking grpc types
+  protected init(): InstrumentationNodeModuleDefinition<any>[] {
     return [
       new InstrumentationNodeModuleDefinition<typeof grpcTypes>(
         'grpc',
diff --git a/packages/opentelemetry-instrumentation-http/src/http.ts b/packages/opentelemetry-instrumentation-http/src/http.ts
index 4b52635eef..c6737dc6d8 100644
--- a/packages/opentelemetry-instrumentation-http/src/http.ts
+++ b/packages/opentelemetry-instrumentation-http/src/http.ts
@@ -28,7 +28,7 @@ import {
 import { suppressTracing } from '@opentelemetry/core';
 import type * as http from 'http';
 import type * as https from 'https';
-import { Socket } from 'net';
+import type { Socket } from 'net';
 import * as semver from 'semver';
 import * as url from 'url';
 import {
@@ -55,7 +55,7 @@ import { RPCMetadata, RPCType, setRPCMetadata } from '@opentelemetry/core';
 /**
  * Http instrumentation instrumentation for Opentelemetry
  */
-export class HttpInstrumentation extends InstrumentationBase<Http> {
+export class HttpInstrumentation extends InstrumentationBase {
   /** keep track on spans not ended */
   private readonly _spanNotEnded: WeakSet<Span> = new WeakSet<Span>();
   private readonly _version = process.versions.node;
@@ -76,7 +76,8 @@ export class HttpInstrumentation extends InstrumentationBase<Http> {
     this._config = Object.assign({}, config);
   }
 
-  init() {
+  // use InstrumentationNodeModuleDefinition<any>[] here to avoid leaking http types
+  protected init(): InstrumentationNodeModuleDefinition<any>[] {
     return [this._getHttpsInstrumentation(), this._getHttpInstrumentation()];
   }
 
@@ -169,7 +170,7 @@ export class HttpInstrumentation extends InstrumentationBase<Http> {
   /**
    * Creates spans for incoming requests, restoring spans' context if applied.
    */
-  protected _getPatchIncomingRequestFunction(component: 'http' | 'https') {
+   private _getPatchIncomingRequestFunction(component: 'http' | 'https') {
     return (original: (event: string, ...args: unknown[]) => boolean) => {
       return this._incomingRequestFunction(component, original);
     };
@@ -179,13 +180,13 @@ export class HttpInstrumentation extends InstrumentationBase<Http> {
    * Creates spans for outgoing requests, sending spans' context for distributed
    * tracing.
    */
-  protected _getPatchOutgoingRequestFunction(component: 'http' | 'https') {
+  private _getPatchOutgoingRequestFunction(component: 'http' | 'https') {
     return (original: Func<http.ClientRequest>): Func<http.ClientRequest> => {
       return this._outgoingRequestFunction(component, original);
     };
   }
 
-  protected _getPatchOutgoingGetFunction(
+  private _getPatchOutgoingGetFunction(
     clientRequest: (
       options: http.RequestOptions | string | url.URL,
       ...args: HttpRequestArgs
diff --git a/packages/opentelemetry-instrumentation-xml-http-request/src/xhr.ts b/packages/opentelemetry-instrumentation-xml-http-request/src/xhr.ts
index eabab83d1c..98458b0e80 100644
--- a/packages/opentelemetry-instrumentation-xml-http-request/src/xhr.ts
+++ b/packages/opentelemetry-instrumentation-xml-http-request/src/xhr.ts
@@ -78,7 +78,7 @@ export interface XMLHttpRequestInstrumentationConfig
 /**
  * This class represents a XMLHttpRequest plugin for auto instrumentation
  */
-export class XMLHttpRequestInstrumentation extends InstrumentationBase<XMLHttpRequest> {
+export class XMLHttpRequestInstrumentation extends InstrumentationBase {
   readonly component: string = 'xml-http-request';
   readonly version: string = VERSION;
   moduleName = this.component;
@@ -97,7 +97,7 @@ export class XMLHttpRequestInstrumentation extends InstrumentationBase<XMLHttpRe
     );
   }
 
-  init() {}
+  protected init() {}
 
   private _getConfig(): XMLHttpRequestInstrumentationConfig {
     return this._config;
diff --git a/packages/opentelemetry-instrumentation/src/instrumentation.ts b/packages/opentelemetry-instrumentation/src/instrumentation.ts
index 56779a5e64..88f1427d0f 100644
--- a/packages/opentelemetry-instrumentation/src/instrumentation.ts
+++ b/packages/opentelemetry-instrumentation/src/instrumentation.ts
@@ -29,8 +29,7 @@ import * as types from './types';
 /**
  * Base abstract internal class for instrumenting node and web plugins
  */
-export abstract class InstrumentationAbstract<T = any>
-  implements types.Instrumentation {
+export abstract class InstrumentationAbstract implements types.Instrumentation {
   protected _config: types.InstrumentationConfig;
 
   private _tracer: Tracer;
@@ -121,7 +120,7 @@ export abstract class InstrumentationAbstract<T = any>
    * methods
    */
   protected abstract init():
-    | InstrumentationModuleDefinition<T>
-    | InstrumentationModuleDefinition<T>[]
+    | InstrumentationModuleDefinition<unknown>
+    | InstrumentationModuleDefinition<unknown>[]
     | void;
 }
diff --git a/packages/opentelemetry-instrumentation/src/platform/node/instrumentation.ts b/packages/opentelemetry-instrumentation/src/platform/node/instrumentation.ts
index f50cff4252..fe039c3de4 100644
--- a/packages/opentelemetry-instrumentation/src/platform/node/instrumentation.ts
+++ b/packages/opentelemetry-instrumentation/src/platform/node/instrumentation.ts
@@ -25,10 +25,9 @@ import { diag } from '@opentelemetry/api';
 /**
  * Base abstract class for instrumenting node plugins
  */
-export abstract class InstrumentationBase<T = any>
-  extends InstrumentationAbstract
+export abstract class InstrumentationBase extends InstrumentationAbstract
   implements types.Instrumentation {
-  private _modules: InstrumentationModuleDefinition<T>[];
+  private _modules: InstrumentationModuleDefinition<unknown>[];
   private _hooks: RequireInTheMiddle.Hooked[] = [];
   private _enabled = false;
 
@@ -45,7 +44,7 @@ export abstract class InstrumentationBase<T = any>
       modules = [modules];
     }
 
-    this._modules = (modules as InstrumentationModuleDefinition<T>[]) || [];
+    this._modules = (modules as InstrumentationModuleDefinition<unknown>[]) || [];
 
     if (this._modules.length === 0) {
       diag.warn(
@@ -131,9 +130,7 @@ export abstract class InstrumentationBase<T = any>
           { internals: true },
           (exports, name, baseDir) => {
             return this._onRequire<typeof exports>(
-              (module as unknown) as InstrumentationModuleDefinition<
-                typeof exports
-              >,
+              module as InstrumentationModuleDefinition<typeof exports>,
               exports,
               name,
               baseDir