diff --git a/relay/healthcheck/receiver.go b/relay/healthcheck/receiver.go
index 9819f4651..51e40be6e 100644
--- a/relay/healthcheck/receiver.go
+++ b/relay/healthcheck/receiver.go
@@ -8,7 +8,7 @@ import (
 	log "github.com/sirupsen/logrus"
 )
 
-var heartbeatTimeout = healthCheckInterval + 10*time.Second
+var heartbeatTimeout = getHealthCheckInterval() + 10*time.Second
 var mux sync.Mutex
 
 func getHeartBeatTimeout() time.Duration {
diff --git a/relay/healthcheck/receiver_test.go b/relay/healthcheck/receiver_test.go
index 8d5e67cdf..fa546d215 100644
--- a/relay/healthcheck/receiver_test.go
+++ b/relay/healthcheck/receiver_test.go
@@ -59,12 +59,12 @@ func TestReceiverHealthCheckAttemptThreshold(t *testing.T) {
 
 	for _, tc := range testsCases {
 		t.Run(tc.name, func(t *testing.T) {
-			originalInterval := healthCheckInterval
+			originalInterval := getHealthCheckInterval()
 			originalTimeout := getHeartBeatTimeout()
-			healthCheckInterval = 1 * time.Second
-			setHeartBeatTimeout(healthCheckInterval + 500*time.Millisecond)
+			setHealthCheckInterval(1 * time.Second)
+			setHeartBeatTimeout(getHealthCheckInterval() + 500*time.Millisecond)
 			defer func() {
-				healthCheckInterval = originalInterval
+				setHealthCheckInterval(originalInterval)
 				setHeartBeatTimeout(originalTimeout)
 			}()
 			//nolint:tenv
@@ -73,7 +73,7 @@ func TestReceiverHealthCheckAttemptThreshold(t *testing.T) {
 
 			receiver := NewReceiver(log.WithField("test_name", tc.name))
 
-			testTimeout := originalTimeout*time.Duration(tc.threshold) + healthCheckInterval
+			testTimeout := originalTimeout*time.Duration(tc.threshold) + getHealthCheckInterval()
 
 			if tc.resetCounterOnce {
 				receiver.Heartbeat()
diff --git a/relay/healthcheck/sender.go b/relay/healthcheck/sender.go
index 57b3015ec..8948211e8 100644
--- a/relay/healthcheck/sender.go
+++ b/relay/healthcheck/sender.go
@@ -19,6 +19,30 @@ var (
 	healthCheckTimeout  = 20 * time.Second
 )
 
+func getHealthCheckInterval() time.Duration {
+	mux.Lock()
+	defer mux.Unlock()
+	return healthCheckInterval
+}
+
+func setHealthCheckInterval(interval time.Duration) {
+	mux.Lock()
+	defer mux.Unlock()
+	healthCheckInterval = interval
+}
+
+func getHealthCheckTimeout() time.Duration {
+	mux.Lock()
+	defer mux.Unlock()
+	return healthCheckTimeout
+}
+
+func setHealthCheckTimeout(timeout time.Duration) {
+	mux.Lock()
+	defer mux.Unlock()
+	healthCheckTimeout = timeout
+}
+
 // Sender is a healthcheck sender
 // It will send healthcheck signal to the receiver
 // If the receiver does not receive the signal in a certain time, it will send a timeout signal and stop to work
@@ -57,7 +81,7 @@ func (hc *Sender) OnHCResponse() {
 }
 
 func (hc *Sender) StartHealthCheck(ctx context.Context) {
-	ticker := time.NewTicker(healthCheckInterval)
+	ticker := time.NewTicker(getHealthCheckInterval())
 	defer ticker.Stop()
 
 	timeoutTicker := time.NewTicker(hc.getTimeoutTime())
@@ -94,7 +118,7 @@ func (hc *Sender) StartHealthCheck(ctx context.Context) {
 }
 
 func (hc *Sender) getTimeoutTime() time.Duration {
-	return healthCheckInterval + healthCheckTimeout
+	return getHealthCheckInterval() + getHealthCheckTimeout()
 }
 
 func getAttemptThresholdFromEnv() int {
diff --git a/relay/healthcheck/sender_test.go b/relay/healthcheck/sender_test.go
index f21167025..7009f36bf 100644
--- a/relay/healthcheck/sender_test.go
+++ b/relay/healthcheck/sender_test.go
@@ -12,8 +12,8 @@ import (
 
 func TestMain(m *testing.M) {
 	// override the health check interval to speed up the test
-	healthCheckInterval = 2 * time.Second
-	healthCheckTimeout = 100 * time.Millisecond
+	setHealthCheckInterval(2 * time.Second)
+	setHealthCheckTimeout(100 * time.Millisecond)
 	code := m.Run()
 	os.Exit(code)
 }
@@ -32,7 +32,7 @@ func TestNewHealthPeriod(t *testing.T) {
 			hc.OnHCResponse()
 		case <-hc.Timeout:
 			t.Fatalf("health check is timed out")
-		case <-time.After(healthCheckInterval + 100*time.Millisecond):
+		case <-time.After(getHealthCheckInterval() + 100*time.Millisecond):
 			t.Fatalf("health check not received")
 		}
 	}
@@ -46,7 +46,7 @@ func TestNewHealthFailed(t *testing.T) {
 
 	select {
 	case <-hc.Timeout:
-	case <-time.After(healthCheckInterval + healthCheckTimeout + 100*time.Millisecond):
+	case <-time.After(getHealthCheckInterval() + getHealthCheckTimeout() + 100*time.Millisecond):
 		t.Fatalf("health check is not timed out")
 	}
 }
@@ -89,7 +89,7 @@ func TestTimeoutReset(t *testing.T) {
 			hc.OnHCResponse()
 		case <-hc.Timeout:
 			t.Fatalf("health check is timed out")
-		case <-time.After(healthCheckInterval + 100*time.Millisecond):
+		case <-time.After(getHealthCheckInterval() + 100*time.Millisecond):
 			t.Fatalf("health check not received")
 		}
 	}
@@ -118,13 +118,13 @@ func TestSenderHealthCheckAttemptThreshold(t *testing.T) {
 
 	for _, tc := range testsCases {
 		t.Run(tc.name, func(t *testing.T) {
-			originalInterval := healthCheckInterval
-			originalTimeout := healthCheckTimeout
-			healthCheckInterval = 1 * time.Second
-			healthCheckTimeout = 500 * time.Millisecond
+			originalInterval := getHealthCheckInterval()
+			originalTimeout := getHealthCheckTimeout()
+			setHealthCheckInterval(1 * time.Second)
+			setHealthCheckTimeout(500 * time.Millisecond)
 			defer func() {
-				healthCheckInterval = originalInterval
-				healthCheckTimeout = originalTimeout
+				setHealthCheckInterval(originalInterval)
+				setHealthCheckTimeout(originalTimeout)
 			}()
 
 			//nolint:tenv
@@ -155,7 +155,7 @@ func TestSenderHealthCheckAttemptThreshold(t *testing.T) {
 				}
 			}()
 
-			testTimeout := sender.getTimeoutTime()*time.Duration(tc.threshold) + healthCheckInterval
+			testTimeout := sender.getTimeoutTime()*time.Duration(tc.threshold) + getHealthCheckInterval()
 
 			select {
 			case <-sender.Timeout: