diff --git a/CHANGELOG.md b/CHANGELOG.md
index d23c23b..b447be5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 SAF-Kotlin-log
 ===
 
+Version 2.5.3
+---
+2020-10-09
+* L 的 printers 使用线程安全的 Set
+
 Version 2.5.2
 ---
 2020-10-03
diff --git a/build.gradle b/build.gradle
index 06f55f6..63141a2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -26,7 +26,7 @@ ext {
 buildscript {
     System.properties['com.android.build.gradle.overrideVersionCheck'] = 'true'
     ext.kotlin_version = '1.4.10'
-    ext.l_version = '2.5.2'
+    ext.l_version = '2.5.3'
 
     repositories {
         google()
diff --git a/core/src/main/java/com/safframework/log/L.kt b/core/src/main/java/com/safframework/log/L.kt
index 2105810..8aef80a 100644
--- a/core/src/main/java/com/safframework/log/L.kt
+++ b/core/src/main/java/com/safframework/log/L.kt
@@ -19,7 +19,7 @@ object L {
     private var header: String? = ""
     private val handlers = LinkedList<BaseHandler>()
     private var firstHandler: BaseHandler
-    private val printers = mutableSetOf<Printer>()
+    private val printers = Collections.synchronizedSet(mutableSetOf<Printer>())
     private var displayThreadInfo:Boolean  = true
     private var displayClassInfo:Boolean   = true
     private var converter: Converter?=null