diff --git a/controllers/fasthttp/commons_test.go b/controllers/fasthttp/commons_test.go
index f81ceb0..de62002 100644
--- a/controllers/fasthttp/commons_test.go
+++ b/controllers/fasthttp/commons_test.go
@@ -9,16 +9,22 @@ import (
 	"github.com/sinhashubham95/go-actuator/models"
 	"github.com/stretchr/testify/assert"
 	"github.com/valyala/fasthttp"
-	"math/rand"
 	"net/http"
+	"sync"
 	"testing"
 )
 
 var encodeJSON = commons.EncodeJSON
 var getThreadDump = core.GetThreadDump
 
+var portMu sync.Mutex
+var port = 1001
+
 func getRandomPortNumber() int {
-	return rand.Intn(9800) + 100
+	portMu.Lock()
+	defer portMu.Unlock()
+	port += 10
+	return port
 }
 
 func setupFastHTTPHandlersAndGetResponse(t *testing.T, endpoint int, path string) *http.Response {
diff --git a/core/httptrace_test.go b/core/httptrace_test.go
index d7f6592..94be7a1 100644
--- a/core/httptrace_test.go
+++ b/core/httptrace_test.go
@@ -8,14 +8,17 @@ import (
 	"github.com/sinhashubham95/go-actuator/models"
 	"github.com/stretchr/testify/assert"
 	"github.com/valyala/fasthttp"
-	"math/rand"
 	"net/http"
 	"net/http/httptest"
+	"sync"
 	"testing"
 
 	"github.com/sinhashubham95/go-actuator/core"
 )
 
+var portMu sync.Mutex
+var port = 2001
+
 func TestGetHTTPTrace(t *testing.T) {
 	assert.Empty(t, core.GetHTTPTrace())
 }
@@ -104,7 +107,10 @@ func TestForMoreThanThresholdRequests(t *testing.T) {
 }
 
 func getRandomPortNumber() int {
-	return rand.Intn(9800) + 100
+	portMu.Lock()
+	defer portMu.Unlock()
+	port += 10
+	return port
 }
 
 func setupGINRouter() *gin.Engine {