diff --git a/dom/fetch/InternalRequest.h b/dom/fetch/InternalRequest.h
index d2b7721f5e59..b74ec1db1e40 100644
--- a/dom/fetch/InternalRequest.h
+++ b/dom/fetch/InternalRequest.h
@@ -263,6 +263,10 @@ class InternalRequest final : public AtomicSafeRefCounted<InternalRequest> {
     mIntegrity.Assign(aIntegrity);
   }
 
+  bool GetKeepalive() const { return mKeepalive; }
+
+  void SetKeepalive(const bool aKeepalive) { mKeepalive = aKeepalive; }
+
   bool MozErrors() const { return mMozErrors; }
 
   void SetMozErrors() { mMozErrors = true; }
@@ -454,6 +458,7 @@ class InternalRequest final : public AtomicSafeRefCounted<InternalRequest> {
   RequestRedirect mRedirectMode;
   RequestPriority mPriorityMode = RequestPriority::Auto;
   nsString mIntegrity;
+  bool mKeepalive = false;
   bool mMozErrors = false;
   nsCString mFragment;
   bool mSkipServiceWorker = false;
diff --git a/dom/fetch/Request.cpp b/dom/fetch/Request.cpp
index 00758384d303..25a7446ec28e 100644
--- a/dom/fetch/Request.cpp
+++ b/dom/fetch/Request.cpp
@@ -517,7 +517,7 @@ SafeRefPtr<Request> Request::Constructor(nsIGlobalObject* aGlobal,
   }
 
   if (aInit.mKeepalive.WasPassed()) {
-    // place holder to set keepalive
+    request->SetKeepalive(aInit.mKeepalive.Value());
   }
 
   if (aInit.mMozErrors.WasPassed() && aInit.mMozErrors.Value()) {
diff --git a/dom/fetch/Request.h b/dom/fetch/Request.h
index 368936345d49..1487700c85ba 100644
--- a/dom/fetch/Request.h
+++ b/dom/fetch/Request.h
@@ -59,7 +59,7 @@ class Request final : public FetchBody<Request>, public nsWrapperCache {
     aIntegrity = mRequest->GetIntegrity();
   }
 
-  bool Keepalive() const { return false; }
+  bool Keepalive() const { return mRequest->GetKeepalive(); }
 
   bool MozErrors() const { return mRequest->MozErrors(); }
 
diff --git a/testing/web-platform/meta/fetch/api/request/request-keepalive.any.js.ini b/testing/web-platform/meta/fetch/api/request/request-keepalive.any.js.ini
index a3819488281a..9298bef1adcd 100644
--- a/testing/web-platform/meta/fetch/api/request/request-keepalive.any.js.ini
+++ b/testing/web-platform/meta/fetch/api/request/request-keepalive.any.js.ini
@@ -1,12 +1,10 @@
+prefs: [dom.fetchKeepalive.enabled:true]
 [request-keepalive.any.sharedworker.html]
   expected:
     if (os == "android") and fission: [OK, TIMEOUT]
   [keepalive flag with stream body]
     expected: FAIL
 
-  [keepalive flag]
-    expected: FAIL
-
 
 [request-keepalive.any.worker.html]
   expected:
@@ -14,21 +12,12 @@
   [keepalive flag with stream body]
     expected: FAIL
 
-  [keepalive flag]
-    expected: FAIL
-
 
 [request-keepalive.any.serviceworker.html]
   [keepalive flag with stream body]
     expected: FAIL
 
-  [keepalive flag]
-    expected: FAIL
-
 
 [request-keepalive.any.html]
   [keepalive flag with stream body]
     expected: FAIL
-
-  [keepalive flag]
-    expected: FAIL