diff --git a/build.gradle b/build.gradle
index 962835b..d8dcdb9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,23 +10,23 @@ ext {
     libraries = [
             appcompat              : "1.2.0",
 
-            kotlinx_coroutines_core: "1.3.8",
+            kotlinx_coroutines_core: "1.3.9",
 
             rxandroid              : "2.1.1",
             rxjava                 : "2.2.19",
 
             retrofit               : "2.9.0",
-            okhttp3                : "4.8.0",
+            okhttp3                : "4.9.0",
             gson                   : "2.8.6",
 
-            coroutines_utils       : "1.1.1"
+            coroutines_utils       : "1.1.2"
     ]
 }
 
 buildscript {
     System.properties['com.android.build.gradle.overrideVersionCheck'] = 'true'
-    ext.kotlin_version = '1.3.72'
-    ext.l_version = '2.5.1'
+    ext.kotlin_version = '1.4.10'
+    ext.l_version = '2.5.2'
 
     repositories {
         google()
diff --git a/debug_view/src/main/java/com/safframework/log/debugview/modules/TimerModule.kt b/debug_view/src/main/java/com/safframework/log/debugview/modules/TimerModule.kt
index 54ecd22..ca1f178 100644
--- a/debug_view/src/main/java/com/safframework/log/debugview/modules/TimerModule.kt
+++ b/debug_view/src/main/java/com/safframework/log/debugview/modules/TimerModule.kt
@@ -99,7 +99,7 @@ object TimerModule: AbstractDebugModule<List<String>>(TimerDataModule(), TimerVi
                 val begin = timerDataMap[model] as Long
                 timerDataMap.remove(model)
                 val msg = getCost(begin, end) ?: return
-                while (timerList.size >= maxLines) {
+                while (timerList.size>0 && timerList.size >= maxLines) {
                     timerList.removeAt(0)
                 }
                 timerList.add(obj.javaClass.simpleName + ":" + msg)