diff --git a/core/services/workflows/syncer/workflow_syncer_test.go b/core/services/workflows/syncer/workflow_syncer_test.go
index 34ba313f4bb..f748f699a26 100644
--- a/core/services/workflows/syncer/workflow_syncer_test.go
+++ b/core/services/workflows/syncer/workflow_syncer_test.go
@@ -539,6 +539,8 @@ func Test_RegistrySyncer_SkipsEventsNotBelongingToDON(t *testing.T) {
 }
 
 func Test_RegistrySyncer_WorkflowRegistered_InitiallyPaused(t *testing.T) {
+	quarantine.Flaky(
+		t, "DX-2120")
 	var (
 		ctx       = coretestutils.Context(t)
 		lggr      = logger.TestLogger(t)
diff --git a/system-tests/tests/smoke/cre/cre_suite_test.go b/system-tests/tests/smoke/cre/cre_suite_test.go
index 3083dfc7d1a..cb521fd7346 100644
--- a/system-tests/tests/smoke/cre/cre_suite_test.go
+++ b/system-tests/tests/smoke/cre/cre_suite_test.go
@@ -73,6 +73,7 @@ func Test_CRE_V1_Billing_EVM_Write(t *testing.T) {
 }
 
 func Test_CRE_V1_Billing_Cron_Beholder(t *testing.T) {
+	quarantine.Flaky(t, "DX-1907")
 	testEnv := t_helpers.SetupTestEnvironmentWithConfig(t, t_helpers.GetDefaultTestConfig(t))
 
 	// TODO remove this when OCR works properly with multiple chains in Local CRE
@@ -94,6 +95,7 @@ To execute tests with v2 contracts start the local CRE first:
  2. Execute the tests in `system-tests/tests/smoke/cre`: `go test -timeout 15m -run "^Test_CRE_V2"`.
 */
 func Test_CRE_V2_Suite(t *testing.T) {
+	quarantine.Flaky(t, "DX-2093")
 	quarantine.Flaky(t, "DX-2002")
 	topology := os.Getenv("TOPOLOGY_NAME")