diff --git a/calculator/pom.xml b/calculator/pom.xml
index 061f081..4e6cbba 100644
--- a/calculator/pom.xml
+++ b/calculator/pom.xml
@@ -70,7 +70,7 @@
         <dependency>
             <groupId>org.mybatis</groupId>
             <artifactId>mybatis</artifactId>
-            <version>3.4.6</version>
+            <version>3.5.6</version>
         </dependency>
 
         <dependency>