diff --git a/EpcQrCodeRest/build.gradle b/EpcQrCodeRest/build.gradle
index 5c3c9be..3b36cfc 100644
--- a/EpcQrCodeRest/build.gradle
+++ b/EpcQrCodeRest/build.gradle
@@ -1,7 +1,7 @@
 plugins {
     id 'org.jetbrains.kotlin.jvm'
-    id "org.jetbrains.kotlin.plugin.allopen" version "1.6.10"
-    id 'io.quarkus'
+    id "org.jetbrains.kotlin.plugin.allopen" version "$kotlinVersion"
+    id 'io.quarkus' version "$quarkusVersion"
 }
 
 group 'net.dankito.banking.epcqrcode'
@@ -35,9 +35,6 @@ dependencies {
     implementation 'io.quarkus:quarkus-kotlin'
     implementation 'io.quarkus:quarkus-resteasy'
     implementation 'io.quarkus:quarkus-resteasy-jackson'
-    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8'
-
-    implementation 'io.quarkus:quarkus-arc'
 
     api project(":EpcQrCode")
 
@@ -47,14 +44,6 @@ dependencies {
 }
 
 
-quarkus {
-    setOutputDirectory("$projectDir/build/classes/kotlin/main")
-}
-
-quarkusDev {
-    setSourceDir("$projectDir/src/main/kotlin")
-}
-
 allOpen {
     annotation("javax.ws.rs.Path")
     annotation("javax.enterprise.context.ApplicationScoped")
diff --git a/gradle.properties b/gradle.properties
index 723a072..09d447d 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -8,7 +8,7 @@ kotlinVersion=1.6.10
 coroutinesVersion=1.6.0
 
 
-quarkusVersion=1.9.2.Final
+quarkusVersion=2.16.6.Final
 
 
 android.useAndroidX=true
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 9ee5222..5b0f683 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -12,10 +12,6 @@ pluginManagement {
       }
     }
   }
-
-  plugins {
-    id("io.quarkus") version "1.9.2.Final" // TODO: why doesn't he find quarkusVersion?
-  }
 }