diff --git a/internal/logger/middleware_test.go b/internal/logger/middleware_test.go
index f0be374..dfbd5d9 100644
--- a/internal/logger/middleware_test.go
+++ b/internal/logger/middleware_test.go
@@ -11,8 +11,7 @@ import (
 )
 
 func TestRequestIDMiddleware_GenerateNewID(t *testing.T) {
-	t.Parallel()
-
+	// Cannot run in parallel: gin.SetMode() modifies global state
 	gin.SetMode(gin.TestMode)
 	router := gin.New()
 	router.Use(RequestIDMiddleware())
@@ -41,8 +40,7 @@ func TestRequestIDMiddleware_GenerateNewID(t *testing.T) {
 }
 
 func TestRequestIDMiddleware_UseExistingID(t *testing.T) {
-	t.Parallel()
-
+	// Cannot run in parallel: gin.SetMode() modifies global state
 	gin.SetMode(gin.TestMode)
 	router := gin.New()
 	router.Use(RequestIDMiddleware())
@@ -196,7 +194,7 @@ func TestUserIDFromContext(t *testing.T) {
 }
 
 func TestLoggingMiddleware(t *testing.T) {
-	t.Parallel()
+	// Cannot run in parallel: gin.SetMode() modifies global state
 
 	// Create a mock logger that records log calls
 	mockLog := &mockLoggerForMiddleware{}
@@ -238,7 +236,7 @@ func TestLoggingMiddleware(t *testing.T) {
 }
 
 func TestLoggingMiddleware_WithRequestID(t *testing.T) {
-	t.Parallel()
+	// Cannot run in parallel: gin.SetMode() modifies global state
 
 	// Create a mock logger
 	mockLog := &mockLoggerForMiddleware{}
@@ -272,8 +270,7 @@ func TestLoggingMiddleware_WithRequestID(t *testing.T) {
 }
 
 func TestRequestIDMiddleware_MultipleRequests(t *testing.T) {
-	t.Parallel()
-
+	// Cannot run in parallel: gin.SetMode() modifies global state
 	gin.SetMode(gin.TestMode)
 	router := gin.New()
 	router.Use(RequestIDMiddleware())