diff --git a/.drone.yml b/.drone.yml
index 8e11bf0..ae38f00 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -19,7 +19,7 @@ steps:
     path: /tmp/cache
 
 - name: build_application
-  image: openjdk:8-jdk
+  image: openjdk:11-jdk
   commands:
     - ./gradlew build -x test
 
diff --git a/Dockerfile b/Dockerfile
index 22269a6..d9db510 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM openjdk:8-jre-alpine
+FROM openjdk:11-jre-alpine
 
 ENV APPLICATION_USER ktor
 RUN adduser -D -g '' $APPLICATION_USER
diff --git a/build.gradle b/build.gradle
index 1dd3d00..f7affed 100644
--- a/build.gradle
+++ b/build.gradle
@@ -55,9 +55,11 @@ dependencies {
 
 kotlin.experimental.coroutines = 'enable'
 
+tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).all {
+    kotlinOptions {
+        jvmTarget = "11"
+    }
+}
 
 shadowJar {
-    baseName = 'output-service-rdb'
-    classifier = null
-    version = null
 }
\ No newline at end of file