diff --git a/pom.xml b/pom.xml
index 99a4ad0..54331df 100644
--- a/pom.xml
+++ b/pom.xml
@@ -262,7 +262,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.4.5</version>
+            <version>1.4.12</version>
         </dependency>
 
         <!-- IE通信のため -->