diff --git a/day01_02mybatis_annotation/pom.xml b/day01_02mybatis_annotation/pom.xml
index ae86f2f..cb5df84 100644
--- a/day01_02mybatis_annotation/pom.xml
+++ b/day01_02mybatis_annotation/pom.xml
@@ -28,7 +28,7 @@
         <dependency>
             <groupId>org.mybatis</groupId>
             <artifactId>mybatis</artifactId>
-            <version>3.4.5</version>
+            <version>3.5.6</version>
         </dependency>
 
         <!--log日志-->
diff --git a/day01_03mybatis_dao/pom.xml b/day01_03mybatis_dao/pom.xml
index 9a63aa7..5c25c13 100644
--- a/day01_03mybatis_dao/pom.xml
+++ b/day01_03mybatis_dao/pom.xml
@@ -28,7 +28,7 @@
         <dependency>
             <groupId>org.mybatis</groupId>
             <artifactId>mybatis</artifactId>
-            <version>3.4.5</version>
+            <version>3.5.6</version>
         </dependency>
 
         <!--log日志-->
diff --git a/day02_01mybatis_crud/pom.xml b/day02_01mybatis_crud/pom.xml
index 31bd8aa..0f3105f 100644
--- a/day02_01mybatis_crud/pom.xml
+++ b/day02_01mybatis_crud/pom.xml
@@ -30,7 +30,7 @@
         <dependency>
             <groupId>org.mybatis</groupId>
             <artifactId>mybatis</artifactId>
-            <version>3.4.5</version>
+            <version>3.5.6</version>
         </dependency>
 
         <!--log日志-->
diff --git a/day03_01dynamicSQL/pom.xml b/day03_01dynamicSQL/pom.xml
index a764b18..be97bee 100644
--- a/day03_01dynamicSQL/pom.xml
+++ b/day03_01dynamicSQL/pom.xml
@@ -24,7 +24,7 @@
         <dependency>
             <groupId>org.mybatis</groupId>
             <artifactId>mybatis</artifactId>
-            <version>3.4.5</version>
+            <version>3.5.6</version>
         </dependency>
 
         <!--log日志-->
diff --git a/day03_02onetoone/pom.xml b/day03_02onetoone/pom.xml
index 61df633..3265470 100644
--- a/day03_02onetoone/pom.xml
+++ b/day03_02onetoone/pom.xml
@@ -24,7 +24,7 @@
         <dependency>
             <groupId>org.mybatis</groupId>
             <artifactId>mybatis</artifactId>
-            <version>3.4.5</version>
+            <version>3.5.6</version>
         </dependency>
 
         <!--log日志-->