diff --git a/base/src/main/java/com/tinyengine/it/service/app/impl/v1/AiChatV1ServiceImpl.java b/base/src/main/java/com/tinyengine/it/service/app/impl/v1/AiChatV1ServiceImpl.java
index eb585b92..71ea4760 100644
--- a/base/src/main/java/com/tinyengine/it/service/app/impl/v1/AiChatV1ServiceImpl.java
+++ b/base/src/main/java/com/tinyengine/it/service/app/impl/v1/AiChatV1ServiceImpl.java
@@ -40,6 +40,7 @@
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
 
@@ -265,7 +266,7 @@ void validateFinalUrl(String finalUrl) {
             throw new ServiceException("400", "Invalid baseUrl: missing host");
         }
 
-        boolean isLoopback = LOOPBACK_HOSTS.contains(host.toLowerCase());
+        boolean isLoopback = LOOPBACK_HOSTS.contains(host.toLowerCase(Locale.ROOT));
 
         List<String> allowedHosts = config.getAllowedHosts();
 
diff --git a/base/src/test/java/com/tinyengine/it/common/utils/SqlIdentifierValidatorTest.java b/base/src/test/java/com/tinyengine/it/common/utils/SqlIdentifierValidatorTest.java
index f0021644..bd5ec105 100644
--- a/base/src/test/java/com/tinyengine/it/common/utils/SqlIdentifierValidatorTest.java
+++ b/base/src/test/java/com/tinyengine/it/common/utils/SqlIdentifierValidatorTest.java
@@ -5,7 +5,8 @@
 import java.util.Arrays;
 import java.util.List;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 
 class SqlIdentifierValidatorTest {
 
@@ -101,7 +102,7 @@ void rejectSqliPatternsInIdentifier() {
                 "name AND 1=1",
                 "id; SELECT SLEEP(5)",
                 "COUNT(*)",
-                "GROUP_CONCAT(username)",
+                "GROUP_CONCAT(username)"
         };
         for (String payload : sqliPayloads) {
             assertThrows(IllegalArgumentException.class,
diff --git a/base/src/test/java/com/tinyengine/it/dynamic/service/DynamicServiceSqlInjectionTest.java b/base/src/test/java/com/tinyengine/it/dynamic/service/DynamicServiceSqlInjectionTest.java
index 3ccab7fb..dd24625c 100644
--- a/base/src/test/java/com/tinyengine/it/dynamic/service/DynamicServiceSqlInjectionTest.java
+++ b/base/src/test/java/com/tinyengine/it/dynamic/service/DynamicServiceSqlInjectionTest.java
@@ -15,9 +15,15 @@
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
-import java.util.*;
-
-import static org.junit.jupiter.api.Assertions.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.when;
 
diff --git a/base/src/test/java/com/tinyengine/it/service/app/impl/v1/AiChatV1ServiceImplTest.java b/base/src/test/java/com/tinyengine/it/service/app/impl/v1/AiChatV1ServiceImplTest.java
index e6791da3..8d45a579 100644
--- a/base/src/test/java/com/tinyengine/it/service/app/impl/v1/AiChatV1ServiceImplTest.java
+++ b/base/src/test/java/com/tinyengine/it/service/app/impl/v1/AiChatV1ServiceImplTest.java
@@ -13,7 +13,9 @@
 import java.util.List;
 import java.util.Map;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 
 class AiChatV1ServiceImplTest {
     private TestAiChatV1ServiceImpl service;