diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index ae3bea61..71372c27 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -15,7 +15,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: 8
+          java-version: 17
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
       - name: Unit Test with Gradle
@@ -26,7 +26,7 @@ jobs:
       - name: Export Integration Test Summary
         run: cat integration-test/build/test-results/report.md >> $GITHUB_STEP_SUMMARY
       - name: Merge Jacoco
-        run: ./gradlew jacocoTestReport
+        run: ./gradlew :jacocoTestReport
       - name: Generate JaCoCo Badge
         uses: cicirello/jacoco-badge-generator@v2
         with:
diff --git a/build.gradle b/build.gradle
index 1fd60a5e..14f77d20 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,11 +1,11 @@
-plugins {
-    id 'java'
-    id 'idea'
-    id 'jacoco'
-}
+allprojects {
+    apply(plugin: 'java')
+    apply(plugin: 'idea')
+    apply(plugin: 'jacoco')
 
-repositories {
-    mavenCentral()
+    repositories {
+        mavenCentral()
+    }
 }
 
 idea {
diff --git a/generator/build.gradle b/generator/build.gradle
index 3c0d82b6..83631287 100644
--- a/generator/build.gradle
+++ b/generator/build.gradle
@@ -1,12 +1,11 @@
 plugins {
-    id "java"
-    id 'idea'
-    id "jacoco"
     id "io.freefair.lombok" version "8.11"
 }
 
-repositories {
-    mavenCentral()
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+    }
 }
 
 group = 'com.reajason.javaweb.memsell'
@@ -52,4 +51,5 @@ dependencies {
 
     testImplementation platform('org.junit:junit-bom:5.11.3')
     testImplementation 'org.junit.jupiter:junit-jupiter'
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 }
\ No newline at end of file
diff --git a/integration-test/build.gradle b/integration-test/build.gradle
index 4f8e9776..899585fb 100644
--- a/integration-test/build.gradle
+++ b/integration-test/build.gradle
@@ -1,12 +1,11 @@
 plugins {
-    id "java"
-    id "jacoco"
-    id 'idea'
     id "io.freefair.lombok" version "8.11"
 }
 
-repositories {
-    mavenCentral()
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+    }
 }
 
 group = 'com.reajason.javaweb'
@@ -21,6 +20,7 @@ dependencies {
     testImplementation 'org.testcontainers:testcontainers:1.20.4'
     testImplementation 'org.testcontainers:junit-jupiter:1.20.4'
     testImplementation platform('org.junit:junit-bom:5.11.3')
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
     testImplementation 'org.junit.jupiter:junit-jupiter'
     testImplementation 'org.junit.platform:junit-platform-reporting:1.11.3'
 }
diff --git a/vul-webapp-jakarta/build.gradle b/vul-webapp-jakarta/build.gradle
index 33a92aed..4988cc74 100644
--- a/vul-webapp-jakarta/build.gradle
+++ b/vul-webapp-jakarta/build.gradle
@@ -5,8 +5,12 @@ plugins {
 group = 'com.reajason.javaweb.vul'
 version = ''
 
-repositories {
-    mavenCentral()
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(8)
+    }
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
 }
 
 dependencies {
diff --git a/vul-webapp/build.gradle b/vul-webapp/build.gradle
index 286f204f..b4e91f83 100644
--- a/vul-webapp/build.gradle
+++ b/vul-webapp/build.gradle
@@ -5,11 +5,10 @@ plugins {
 group = 'com.reajason.javaweb.vul'
 version = ''
 
-repositories {
-    mavenCentral()
-}
-
 java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(8)
+    }
     sourceCompatibility = JavaVersion.VERSION_1_6
     targetCompatibility = JavaVersion.VERSION_1_6
 }