diff --git a/package-lock.json b/package-lock.json
index d40c9e998..cd1b4b3c4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "testcafe-hammerhead",
-  "version": "31.6.3",
+  "version": "31.6.4",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "testcafe-hammerhead",
-      "version": "31.6.3",
+      "version": "31.6.4",
       "license": "MIT",
       "dependencies": {
         "@adobe/css-tools": "^4.3.0-rc.1",
diff --git a/package.json b/package.json
index 149c77a03..0bfb63506 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "testcafe-hammerhead",
   "description": "A powerful web-proxy used as a core for the TestCafe testing framework (https://github.com/DevExpress/testcafe).",
-  "version": "31.6.3",
+  "version": "31.6.4",
   "homepage": "https://github.com/DevExpress/testcafe-hammerhead",
   "bugs": {
     "url": "https://github.com/DevExpress/testcafe-hammerhead/issues"
diff --git a/src/request-pipeline/context/index.ts b/src/request-pipeline/context/index.ts
index 695bfee43..44ce23696 100644
--- a/src/request-pipeline/context/index.ts
+++ b/src/request-pipeline/context/index.ts
@@ -426,6 +426,15 @@ export default class RequestPipelineContext extends BaseRequestPipelineContext {
         this.goToNextStage = false;
     }
 
+    closeConnectionOnError (): void {
+        this.req.destroy();
+
+        // NOTE: For Node versions greater than 15.4, we check the socket. If req.destroy didn't destroy it, we call the corresponding method of the socket.
+        if (this.req.socket && !this.req.socket.destroyed)
+            this.req.socket.destroy();
+
+    }
+
     toProxyUrl (url: string, isCrossDomain: boolean, resourceType: string, charset?: string, reqOrigin?: string, credentials?: urlUtils.Credentials): string {
         const proxyHostname = this.serverInfo.hostname;
         const proxyProtocol = this.serverInfo.protocol;
diff --git a/src/request-pipeline/utils.ts b/src/request-pipeline/utils.ts
index 0e2f0f353..bc9cac9d5 100644
--- a/src/request-pipeline/utils.ts
+++ b/src/request-pipeline/utils.ts
@@ -90,7 +90,7 @@ export function error (ctx: RequestPipelineContext, err: string) {
     if (ctx.isPage && !ctx.isIframe)
         ctx.session.handlePageError(ctx, err);
     else if (ctx.isAjax)
-        ctx.req.destroy();
+        ctx.closeConnectionOnError();
     else
         ctx.closeWithError(500, err.toString());
 }