diff --git a/build.gradle b/build.gradle
index 68b9427..8e5492c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -21,7 +21,7 @@ allprojects {
 
 subprojects {
     ext {
-        version '0.6.0'
+        version '0.6.1'
         spring_version = "2.3.0.RELEASE"
     }
 
diff --git a/src/gaea.app/src/main/kotlin/com/synebula/gaea/app/component/Logger.kt b/src/gaea.app/src/main/kotlin/com/synebula/gaea/app/component/Logger.kt
index fbbe6e1..24b042d 100644
--- a/src/gaea.app/src/main/kotlin/com/synebula/gaea/app/component/Logger.kt
+++ b/src/gaea.app/src/main/kotlin/com/synebula/gaea/app/component/Logger.kt
@@ -88,7 +88,7 @@ class Logger : ILogger {
 
     override fun debug(t: Throwable) {
         if (this.logger.isDebugEnabled) {
-            this.logger.debug(t.toString())
+            this.logger.debug(t.message, t)
         }
     }
 
@@ -134,7 +134,7 @@ class Logger : ILogger {
 
     override fun info(t: Throwable) {
         if (this.logger.isInfoEnabled) {
-            this.logger.info(t.toString())
+            this.logger.info(t.message, t)
         }
     }
 
@@ -179,7 +179,7 @@ class Logger : ILogger {
 
     override fun warn(t: Throwable) {
         if (this.logger.isWarnEnabled) {
-            this.logger.warn(t.toString())
+            this.logger.warn(t.message, t)
         }
     }
 
@@ -225,7 +225,7 @@ class Logger : ILogger {
 
     override fun error(t: Throwable) {
         if (this.logger.isErrorEnabled) {
-            this.logger.error(t.toString())
+            this.logger.error(t.message, t)
         }
     }