diff --git a/.github/workflows/gradle-publish.yml b/.github/workflows/gradle-publish.yml
index de39a92..5546fe4 100644
--- a/.github/workflows/gradle-publish.yml
+++ b/.github/workflows/gradle-publish.yml
@@ -20,10 +20,10 @@ jobs:
     environment: PROD
     steps:
     - uses: actions/checkout@v2
-    - name: Set up JDK 17
+    - name: Set up JDK 21
       uses: actions/setup-java@v2
       with:
-        java-version: '17'
+        java-version: '21'
         distribution: 'temurin'
         server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
         settings-path: ${{ github.workspace }} # location for the settings.xml file
diff --git a/build.gradle.kts b/build.gradle.kts
index 301e4ec..e8cb964 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -44,11 +44,11 @@ subprojects {
     }
 
     // compile
-    java.sourceCompatibility = JavaVersion.VERSION_17
+    java.sourceCompatibility = JavaVersion.VERSION_21
 
     tasks.withType<KotlinCompile> {
         kotlinOptions {
-            jvmTarget = "17"
+            jvmTarget = "21"
             languageVersion = "1.9"
             freeCompilerArgs = listOf("-opt-in=kotlin.RequiresOptIn")
         }
@@ -105,7 +105,7 @@ subprojects {
 
     tasks {
         withType<Detekt> {
-            this.jvmTarget = "14"
+            this.jvmTarget = "21"
             reports {
                 // observe findings in your browser with structure and code snippets
                 html.required.set(true)
@@ -121,7 +121,7 @@ subprojects {
 
     // jacoco
     jacoco {
-        toolVersion = "0.8.7"
+        toolVersion = "0.8.12"
     }
 
     tasks.jacocoTestReport {