diff --git a/test/with_api_v1/acceptance/send_test.go b/test/with_api_v1/acceptance/send_test.go
index a7adb999..a6ee0b55 100644
--- a/test/with_api_v1/acceptance/send_test.go
+++ b/test/with_api_v1/acceptance/send_test.go
@@ -15,7 +15,6 @@ package test
 
 import (
 	"fmt"
-	"sync"
 	"testing"
 	"time"
 
@@ -272,12 +271,8 @@ receivers:
 func TestResolved(t *testing.T) {
 	t.Parallel()
 
-	var wg sync.WaitGroup
-	wg.Add(10)
-
-	for i := 0; i < 10; i++ {
-		go func() {
-			conf := `
+	for i := 0; i < 2; i++ {
+		conf := `
 global:
   resolve_timeout: 10s
 
@@ -293,38 +288,34 @@ receivers:
   - url: 'http://%s'
 `
 
-			at := NewAcceptanceTest(t, &AcceptanceOpts{
-				Tolerance: 150 * time.Millisecond,
-			})
+		at := NewAcceptanceTest(t, &AcceptanceOpts{
+			Tolerance: 150 * time.Millisecond,
+		})
 
-			co := at.Collector("webhook")
-			wh := NewWebhook(co)
+		co := at.Collector("webhook")
+		wh := NewWebhook(co)
 
-			am := at.Alertmanager(fmt.Sprintf(conf, wh.Address()))
+		am := at.Alertmanager(fmt.Sprintf(conf, wh.Address()))
 
-			am.Push(At(1),
-				Alert("alertname", "test", "lbl", "v1"),
-				Alert("alertname", "test", "lbl", "v2"),
-				Alert("alertname", "test", "lbl", "v3"),
-			)
+		am.Push(At(1),
+			Alert("alertname", "test", "lbl", "v1"),
+			Alert("alertname", "test", "lbl", "v2"),
+			Alert("alertname", "test", "lbl", "v3"),
+		)
 
-			co.Want(Between(2, 2.5),
-				Alert("alertname", "test", "lbl", "v1").Active(1),
-				Alert("alertname", "test", "lbl", "v2").Active(1),
-				Alert("alertname", "test", "lbl", "v3").Active(1),
-			)
-			co.Want(Between(12, 13),
-				Alert("alertname", "test", "lbl", "v1").Active(1, 11),
-				Alert("alertname", "test", "lbl", "v2").Active(1, 11),
-				Alert("alertname", "test", "lbl", "v3").Active(1, 11),
-			)
+		co.Want(Between(2, 2.5),
+			Alert("alertname", "test", "lbl", "v1").Active(1),
+			Alert("alertname", "test", "lbl", "v2").Active(1),
+			Alert("alertname", "test", "lbl", "v3").Active(1),
+		)
+		co.Want(Between(12, 13),
+			Alert("alertname", "test", "lbl", "v1").Active(1, 11),
+			Alert("alertname", "test", "lbl", "v2").Active(1, 11),
+			Alert("alertname", "test", "lbl", "v3").Active(1, 11),
+		)
 
-			at.Run()
-			wg.Done()
-		}()
+		at.Run()
 	}
-
-	wg.Wait()
 }
 
 func TestResolvedFilter(t *testing.T) {
diff --git a/test/with_api_v2/acceptance/send_test.go b/test/with_api_v2/acceptance/send_test.go
index 4b97272f..8fba1d41 100644
--- a/test/with_api_v2/acceptance/send_test.go
+++ b/test/with_api_v2/acceptance/send_test.go
@@ -15,7 +15,6 @@ package test
 
 import (
 	"fmt"
-	"sync"
 	"testing"
 	"time"
 
@@ -272,12 +271,8 @@ receivers:
 func TestResolved(t *testing.T) {
 	t.Parallel()
 
-	var wg sync.WaitGroup
-	wg.Add(10)
-
-	for i := 0; i < 10; i++ {
-		go func() {
-			conf := `
+	for i := 0; i < 2; i++ {
+		conf := `
 global:
   resolve_timeout: 10s
 
@@ -293,38 +288,34 @@ receivers:
   - url: 'http://%s'
 `
 
-			at := NewAcceptanceTest(t, &AcceptanceOpts{
-				Tolerance: 150 * time.Millisecond,
-			})
+		at := NewAcceptanceTest(t, &AcceptanceOpts{
+			Tolerance: 150 * time.Millisecond,
+		})
 
-			co := at.Collector("webhook")
-			wh := NewWebhook(co)
+		co := at.Collector("webhook")
+		wh := NewWebhook(co)
 
-			am := at.Alertmanager(fmt.Sprintf(conf, wh.Address()))
+		am := at.Alertmanager(fmt.Sprintf(conf, wh.Address()))
 
-			am.Push(At(1),
-				Alert("alertname", "test", "lbl", "v1"),
-				Alert("alertname", "test", "lbl", "v2"),
-				Alert("alertname", "test", "lbl", "v3"),
-			)
+		am.Push(At(1),
+			Alert("alertname", "test", "lbl", "v1"),
+			Alert("alertname", "test", "lbl", "v2"),
+			Alert("alertname", "test", "lbl", "v3"),
+		)
 
-			co.Want(Between(2, 2.5),
-				Alert("alertname", "test", "lbl", "v1").Active(1),
-				Alert("alertname", "test", "lbl", "v2").Active(1),
-				Alert("alertname", "test", "lbl", "v3").Active(1),
-			)
-			co.Want(Between(12, 13),
-				Alert("alertname", "test", "lbl", "v1").Active(1, 11),
-				Alert("alertname", "test", "lbl", "v2").Active(1, 11),
-				Alert("alertname", "test", "lbl", "v3").Active(1, 11),
-			)
+		co.Want(Between(2, 2.5),
+			Alert("alertname", "test", "lbl", "v1").Active(1),
+			Alert("alertname", "test", "lbl", "v2").Active(1),
+			Alert("alertname", "test", "lbl", "v3").Active(1),
+		)
+		co.Want(Between(12, 13),
+			Alert("alertname", "test", "lbl", "v1").Active(1, 11),
+			Alert("alertname", "test", "lbl", "v2").Active(1, 11),
+			Alert("alertname", "test", "lbl", "v3").Active(1, 11),
+		)
 
-			at.Run()
-			wg.Done()
-		}()
+		at.Run()
 	}
-
-	wg.Wait()
 }
 
 func TestResolvedFilter(t *testing.T) {