diff --git a/day01_02mybatis_annotation/pom.xml b/day01_02mybatis_annotation/pom.xml
index ae86f2f..038e0c4 100644
--- a/day01_02mybatis_annotation/pom.xml
+++ b/day01_02mybatis_annotation/pom.xml
@@ -21,7 +21,7 @@
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
-            <version>5.1.37</version>
+            <version>8.0.28</version>
         </dependency>
 
         <!-- mybatis配置 -->
diff --git a/day01_03mybatis_dao/pom.xml b/day01_03mybatis_dao/pom.xml
index 9a63aa7..13dbf9f 100644
--- a/day01_03mybatis_dao/pom.xml
+++ b/day01_03mybatis_dao/pom.xml
@@ -21,7 +21,7 @@
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
-            <version>5.1.37</version>
+            <version>8.0.28</version>
         </dependency>
 
         <!-- mybatis配置 -->
diff --git a/day02_01mybatis_crud/pom.xml b/day02_01mybatis_crud/pom.xml
index 31bd8aa..98d54e0 100644
--- a/day02_01mybatis_crud/pom.xml
+++ b/day02_01mybatis_crud/pom.xml
@@ -23,7 +23,7 @@
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
-            <version>5.1.37</version>
+            <version>8.0.28</version>
         </dependency>
 
         <!-- mybatis配置 -->
diff --git a/day03_01dynamicSQL/pom.xml b/day03_01dynamicSQL/pom.xml
index a764b18..89542e0 100644
--- a/day03_01dynamicSQL/pom.xml
+++ b/day03_01dynamicSQL/pom.xml
@@ -17,7 +17,7 @@
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
-            <version>5.1.37</version>
+            <version>8.0.28</version>
         </dependency>
 
         <!-- mybatis配置 -->
diff --git a/day03_02onetoone/pom.xml b/day03_02onetoone/pom.xml
index 61df633..f5326d1 100644
--- a/day03_02onetoone/pom.xml
+++ b/day03_02onetoone/pom.xml
@@ -17,7 +17,7 @@
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
-            <version>5.1.37</version>
+            <version>8.0.28</version>
         </dependency>
 
         <!-- mybatis配置 -->