diff --git a/catchup/fetcher_test.go b/catchup/fetcher_test.go
index 44e9ab19fa..3c83baae01 100644
--- a/catchup/fetcher_test.go
+++ b/catchup/fetcher_test.go
@@ -148,7 +148,7 @@ func (b *basicRPCNode) RegisterHandlers(dispatch []network.TaggedMessageHandler)
 
 func (b *basicRPCNode) start() bool {
 	var err error
-	b.listener, err = net.Listen("tcp", "")
+	b.listener, err = net.Listen("tcp", "127.0.0.1:")
 	if err != nil {
 		logging.Base().Error("tcp listen", err)
 		return false
diff --git a/rpcs/txService_test.go b/rpcs/txService_test.go
index 5ced5b1a3b..70e13fc227 100644
--- a/rpcs/txService_test.go
+++ b/rpcs/txService_test.go
@@ -91,7 +91,7 @@ func (b *basicRPCNode) RegisterHandlers(dispatch []network.TaggedMessageHandler)
 
 func (b *basicRPCNode) start() bool {
 	var err error
-	b.listener, err = net.Listen("tcp", "")
+	b.listener, err = net.Listen("tcp", "127.0.0.1:")
 	if err != nil {
 		logging.Base().Error("tcp listen", err)
 		return false
diff --git a/util/metrics/counter_test.go b/util/metrics/counter_test.go
index 75512b80e0..ec253f150a 100644
--- a/util/metrics/counter_test.go
+++ b/util/metrics/counter_test.go
@@ -39,7 +39,7 @@ func TestMetricCounter(t *testing.T) {
 	}
 
 	// create a http listener.
-	port := test.createListener(":0")
+	port := test.createListener("127.0.0.1:0")
 
 	metricService := MakeMetricService(&ServiceConfig{
 		NodeExporterListenAddress: fmt.Sprintf("localhost:%d", port),
@@ -85,7 +85,7 @@ func TestMetricCounterFastInts(t *testing.T) {
 	}
 
 	// create a http listener.
-	port := test.createListener(":0")
+	port := test.createListener("127.0.0.1:0")
 
 	metricService := MakeMetricService(&ServiceConfig{
 		NodeExporterListenAddress: fmt.Sprintf("localhost:%d", port),
@@ -132,7 +132,7 @@ func TestMetricCounterMixed(t *testing.T) {
 	}
 
 	// create a http listener.
-	port := test.createListener(":0")
+	port := test.createListener("127.0.0.1:0")
 
 	metricService := MakeMetricService(&ServiceConfig{
 		NodeExporterListenAddress: fmt.Sprintf("localhost:%d", port),
diff --git a/util/metrics/gauge_test.go b/util/metrics/gauge_test.go
index 2268fbe6f2..41a9edb927 100644
--- a/util/metrics/gauge_test.go
+++ b/util/metrics/gauge_test.go
@@ -38,7 +38,7 @@ func TestMetricGauge(t *testing.T) {
 		MetricTest: NewMetricTest(),
 	}
 	// create a http listener.
-	port := test.createListener(":0")
+	port := test.createListener("127.0.0.1:0")
 
 	metricService := MakeMetricService(&ServiceConfig{
 		NodeExporterListenAddress: fmt.Sprintf("localhost:%d", port),