diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 58371b7..893c74e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -46,7 +46,9 @@ jobs:
       - name: Get dependencies
         run: go mod tidy
       - name: Tests
-        run: go test ./... -v -cpu 2 -timeout 30s -race -cover -coverprofile=coverage.txt -covermode=atomic
+        run: |
+          go install gotest.tools/gotestsum@latest
+          gotestsum --format testdox ./... -v -cpu 2 -timeout 30s -race -cover -coverprofile=coverage.txt -covermode=atomic
       - name: Coverage
         run: |
           go install github.com/axw/gocov/gocov@latest
diff --git a/core/localizer_test.go b/core/localizer_test.go
index 35050fa..4190974 100644
--- a/core/localizer_test.go
+++ b/core/localizer_test.go
@@ -102,7 +102,6 @@ func (l *LocalizerTest) Test_LocalizationMiddleware_Context() {
 
 func (l *LocalizerTest) Test_LocalizationMiddleware_Httptest() {
 	var wg sync.WaitGroup
-	r := rand.New(rand.NewSource(time.Now().UnixNano())) // nolint:gosec
 	l.localizer.Preload(DefaultLanguages)
 	langMsgMap := map[language.Tag]string{
 		language.English: "Test message",
@@ -120,6 +119,7 @@ func (l *LocalizerTest) Test_LocalizationMiddleware_Httptest() {
 	for i := 0; i < 1000; i++ {
 		wg.Add(1)
 		go func(m map[language.Tag]string, wg *sync.WaitGroup) {
+			r := rand.New(rand.NewSource(time.Now().UnixNano() + int64(i))) // nolint:gosec
 			var tag language.Tag
 			switch r.Intn(3-1) + 1 { // nolint:gosec
 			case 1: