diff --git a/api-portal/pom.xml b/api-portal/pom.xml
index f14b32db..436195e0 100644
--- a/api-portal/pom.xml
+++ b/api-portal/pom.xml
@@ -87,7 +87,7 @@
         <dependency>
             <groupId>de.codecentric</groupId>
             <artifactId>spring-boot-admin-starter-client</artifactId>
-            <version>${spring-boot-admin.version}</version>
+            <version>${spring-boot-admin-starter-client.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
@@ -125,7 +125,7 @@
         <dependency>
             <groupId>com.baomidou</groupId>
             <artifactId>mybatis-plus-boot-starter</artifactId>
-            <version>3.3.1</version>
+            <version>${mybatis-plus-boot-starter.version}</version>
         </dependency>
         <dependency>
             <groupId>mysql</groupId>
@@ -135,7 +135,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>druid</artifactId>
-            <version>1.1.22</version>
+            <version>${druid.version}</version>
         </dependency>
 
         <dependency>
diff --git a/auth-center/pom.xml b/auth-center/pom.xml
index 5c05e58e..53a50097 100644
--- a/auth-center/pom.xml
+++ b/auth-center/pom.xml
@@ -85,7 +85,7 @@
         <dependency>
             <groupId>de.codecentric</groupId>
             <artifactId>spring-boot-admin-starter-client</artifactId>
-            <version>${spring-boot-admin.version}</version>
+            <version>${spring-boot-admin-starter-client.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
@@ -117,7 +117,7 @@
         <dependency>
             <groupId>com.baomidou</groupId>
             <artifactId>mybatis-plus-boot-starter</artifactId>
-            <version>3.3.1</version>
+            <version>${mybatis-plus-boot-starter.version}</version>
         </dependency>
         <dependency>
             <groupId>mysql</groupId>
@@ -127,7 +127,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>druid</artifactId>
-            <version>1.1.22</version>
+            <version>${druid.version}</version>
         </dependency>
 
         <dependency>
diff --git a/exercise-mis/pom.xml b/exercise-mis/pom.xml
index d8dc6e3a..cf2c9496 100644
--- a/exercise-mis/pom.xml
+++ b/exercise-mis/pom.xml
@@ -85,7 +85,7 @@
         <dependency>
             <groupId>de.codecentric</groupId>
             <artifactId>spring-boot-admin-starter-client</artifactId>
-            <version>${spring-boot-admin.version}</version>
+            <version>${spring-boot-admin-starter-client.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
@@ -109,7 +109,7 @@
         <dependency>
             <groupId>com.baomidou</groupId>
             <artifactId>mybatis-plus-boot-starter</artifactId>
-            <version>3.3.1</version>
+            <version>${mybatis-plus-boot-starter.version}</version>
         </dependency>
         <dependency>
             <groupId>mysql</groupId>
@@ -119,7 +119,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>druid</artifactId>
-            <version>1.1.22</version>
+            <version>${druid.version}</version>
         </dependency>
     </dependencies>
 </project>
diff --git a/gateway/pom.xml b/gateway/pom.xml
index 2152cbec..b5daad5e 100644
--- a/gateway/pom.xml
+++ b/gateway/pom.xml
@@ -105,7 +105,7 @@
         <dependency>
             <groupId>de.codecentric</groupId>
             <artifactId>spring-boot-admin-starter-client</artifactId>
-            <version>${spring-boot-admin.version}</version>
+            <version>${spring-boot-admin-starter-client.version}</version>
         </dependency>
 
         <dependency>
diff --git a/muscle-mis/pom.xml b/muscle-mis/pom.xml
index 8d01dfd2..6fdd92c6 100644
--- a/muscle-mis/pom.xml
+++ b/muscle-mis/pom.xml
@@ -85,7 +85,7 @@
         <dependency>
             <groupId>de.codecentric</groupId>
             <artifactId>spring-boot-admin-starter-client</artifactId>
-            <version>${spring-boot-admin.version}</version>
+            <version>${spring-boot-admin-starter-client.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
@@ -109,7 +109,7 @@
         <dependency>
             <groupId>com.baomidou</groupId>
             <artifactId>mybatis-plus-boot-starter</artifactId>
-            <version>3.3.1</version>
+            <version>${mybatis-plus-boot-starter.version}</version>
         </dependency>
         <dependency>
             <groupId>mysql</groupId>
@@ -119,7 +119,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>druid</artifactId>
-            <version>1.1.22</version>
+            <version>${druid.version}</version>
         </dependency>
     </dependencies>
 </project>
diff --git a/pom.xml b/pom.xml
index 5fc67672..f28e4edc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -39,8 +39,12 @@
         <java.version>11</java.version>
         <spring-cloud.version>Hoxton.SR4</spring-cloud.version>
         <spring-content.version>1.0.0.M5</spring-content.version>
-        <spring-boot-admin.version>2.2.2</spring-boot-admin.version>
-        <knife4j.version>2.0.2</knife4j.version>
+        <spring-boot-admin-starter-client.version>2.3.1</spring-boot-admin-starter-client.version>
+        <druid.version>1.2.4</druid.version>
+        <mybatis-plus-boot-starter.version>3.4.1</mybatis-plus-boot-starter.version>
+        <hutool-all.version>5.5.2</hutool-all.version>
+        <guava.version>30.0-jre</guava.version>
+        <knife4j.version>3.0.2</knife4j.version>
     </properties>
 
     <!-- The modules (sometimes called subprojects) to build as a part of this project. -->
@@ -272,12 +276,12 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>29.0-jre</version>
+            <version>${guava.version}</version>
         </dependency>
         <dependency>
             <groupId>cn.hutool</groupId>
             <artifactId>hutool-all</artifactId>
-            <version>5.3.4</version>
+            <version>${hutool-all.version}</version>
         </dependency>
 
         <!-- Brings the popular ruby faker gem to Java https://github.com/DiUS/java-faker -->
diff --git a/spring-boot-admin/pom.xml b/spring-boot-admin/pom.xml
index b8ed4b30..5e22fd36 100644
--- a/spring-boot-admin/pom.xml
+++ b/spring-boot-admin/pom.xml
@@ -84,7 +84,7 @@
         <dependency>
             <groupId>de.codecentric</groupId>
             <artifactId>spring-boot-admin-starter-server</artifactId>
-            <version>${spring-boot-admin.version}</version>
+            <version>${spring-boot-admin-starter-client.version}</version>
         </dependency>
 
         <dependency>