diff --git a/.github/workflows/java-exercise.yml b/.github/workflows/java-exercise.yml
index 7c35c31..82f721b 100644
--- a/.github/workflows/java-exercise.yml
+++ b/.github/workflows/java-exercise.yml
@@ -5,13 +5,19 @@ on:
 jobs:
   java-exercise:
     runs-on: ubuntu-22.04
+    strategy:
+      fail-fast: false
+      matrix:
+        java: 
+          - '11'
+          - '17'
     steps:
       - uses: actions/checkout@v3
 
       - uses: actions/setup-java@v3
         with:
-          distribution: 'adopt'
-          java-version: '11'
+          distribution: 'temurin'
+          java-version: ${{ matrix.java }}
 
       - name: compile
         working-directory: topics/testing/code
diff --git a/topics/testing/code/pom.xml b/topics/testing/code/pom.xml
index f746b24..55db059 100644
--- a/topics/testing/code/pom.xml
+++ b/topics/testing/code/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.5.1</version>
+        <version>2.7.13</version>
         <relativePath/>
     </parent>
 
@@ -36,7 +36,7 @@
         <dependency>
             <groupId>org.springdoc</groupId>
             <artifactId>springdoc-openapi-ui</artifactId>
-            <version>1.5.9</version>
+            <version>1.7.0</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
@@ -60,19 +60,19 @@
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>
-            <version>5.8.0-M1</version>
+            <version>5.9.3</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-engine</artifactId>
-            <version>5.8.0-M1</version>
+            <version>5.9.3</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter</artifactId>
-            <version>5.8.0-M1</version>
+            <version>5.9.3</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -85,7 +85,7 @@
             <groupId>io.projectreactor</groupId>
             <artifactId>reactor-test</artifactId>
             <scope>test</scope>
-            <version>3.4.6</version>
+            <version>3.5.8</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
@@ -104,19 +104,19 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.8.1</version>
+                <version>3.11.0</version>
             </plugin>
 
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
-                <version>3.0.0-M5</version>
+                <version>3.1.2</version>
             </plugin>
 
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-failsafe-plugin</artifactId>
-                <version>2.22.2</version>
+                <version>3.1.2</version>
                 <configuration>
                     <forkCount>1</forkCount>
                     <reuseForks>false</reuseForks>
@@ -126,7 +126,7 @@
             <plugin>
                 <groupId>com.diffplug.spotless</groupId>
                 <artifactId>spotless-maven-plugin</artifactId>
-                <version>2.12.0</version>
+                <version>2.37.0</version>
                 <configuration>
                     <java>
                         <importOrder />
@@ -139,7 +139,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-pmd-plugin</artifactId>
-                <version>3.14.0</version>
+                <version>3.21.0</version>
                 <configuration>
                     <linkXRef>false</linkXRef>
                     <rulesets>