diff --git a/hello-world-groovy/build.gradle b/hello-world-groovy/build.gradle
index 4d9ee84..6f726f5 100644
--- a/hello-world-groovy/build.gradle
+++ b/hello-world-groovy/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id "groovy"
-    id "com.github.johnrengelman.shadow" version "5.0.0"
+    id "com.github.johnrengelman.shadow" version "5.2.0"
     id "application"
 }
 
@@ -18,6 +18,7 @@ configurations {
 }
 
 dependencies {
+    annotationProcessor platform("io.micronaut:micronaut-bom:$micronautVersion")
     compileOnly platform("io.micronaut:micronaut-bom:$micronautVersion")
     compileOnly "io.micronaut:micronaut-inject-groovy"
     compileOnly "io.micronaut.configuration:micronaut-openapi"
@@ -25,17 +26,18 @@ dependencies {
     implementation "io.swagger.core.v3:swagger-annotations"
     implementation "io.micronaut:micronaut-runtime-groovy"
     implementation "io.micronaut:micronaut-validation"
+    implementation "javax.annotation:javax.annotation-api"
     implementation "io.micronaut:micronaut-http-server-netty"
     implementation "io.micronaut:micronaut-http-client"
     runtimeOnly "ch.qos.logback:logback-classic:1.2.3"
     testCompileOnly platform("io.micronaut:micronaut-bom:$micronautVersion")
+    testImplementation platform("io.micronaut:micronaut-bom:$micronautVersion")
     testImplementation("org.spockframework:spock-core") {
         exclude group: "org.codehaus.groovy", module: "groovy-all"
     }
     testImplementation "io.micronaut:micronaut-inject-groovy"
     testImplementation "io.micronaut.test:micronaut-test-spock"
     testImplementation "io.micronaut.test:micronaut-test-junit5"
-    testRuntimeOnly "org.junit.vintage:junit-vintage-engine:5.5.0"
 }
 
 test.classpath += configurations.developmentOnly
@@ -49,5 +51,7 @@ shadowJar {
     mergeServiceFiles()
 }
 
-run.classpath += configurations.developmentOnly
-run.jvmArgs('-noverify', '-XX:TieredStopAtLevel=1', '-Dcom.sun.management.jmxremote')
+tasks.withType(JavaExec) {
+    classpath += configurations.developmentOnly
+    jvmArgs('-noverify', '-XX:TieredStopAtLevel=1', '-Dcom.sun.management.jmxremote')
+}
diff --git a/hello-world-groovy/gradle.properties b/hello-world-groovy/gradle.properties
index 2e538cd..e95c26f 100644
--- a/hello-world-groovy/gradle.properties
+++ b/hello-world-groovy/gradle.properties
@@ -1 +1 @@
-micronautVersion=1.2.0
\ No newline at end of file
+micronautVersion=1.3.5
\ No newline at end of file
diff --git a/hello-world-groovy/gradle/wrapper/gradle-wrapper.properties b/hello-world-groovy/gradle/wrapper/gradle-wrapper.properties
index b0acbdc..ba94df8 100644
--- a/hello-world-groovy/gradle/wrapper/gradle-wrapper.properties
+++ b/hello-world-groovy/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/hello-world-groovy/src/main/groovy/example/Application.groovy b/hello-world-groovy/src/main/groovy/example/Application.groovy
index a93c26b..13b3152 100644
--- a/hello-world-groovy/src/main/groovy/example/Application.groovy
+++ b/hello-world-groovy/src/main/groovy/example/Application.groovy
@@ -15,11 +15,51 @@
  */
 package example
 
+import groovy.transform.CompileStatic
 import io.micronaut.runtime.Micronaut
+import io.swagger.v3.oas.annotations.ExternalDocumentation
+import io.swagger.v3.oas.annotations.OpenAPIDefinition
+import io.swagger.v3.oas.annotations.info.Contact
+import io.swagger.v3.oas.annotations.info.Info
+import io.swagger.v3.oas.annotations.info.License
+import io.swagger.v3.oas.annotations.security.SecurityRequirement
+import io.swagger.v3.oas.annotations.servers.Server
+import io.swagger.v3.oas.annotations.servers.ServerVariable
+import io.swagger.v3.oas.annotations.tags.Tag
 
+@OpenAPIDefinition(
+        info = @Info(
+                title = "the title",
+                version = "0.0",
+                description = "My API",
+                license = @License(name = "Apache 2.0", url = "http://foo.bar"),
+                contact = @Contact(url = "http://gigantic-server.com", name = "Fred", email = "Fred@gigantic-server.com")
+        ),
+        tags = [
+            @Tag(name = "Tag 1", description = "desc 1", externalDocs = @ExternalDocumentation(description = "docs desc")),
+            @Tag(name = "Tag 2", description = "desc 2", externalDocs = @ExternalDocumentation(description = "docs desc 2")),
+            @Tag(name = "Tag 3")
+        ],
+        externalDocs = @ExternalDocumentation(description = "definition docs desc"),
+        security = [
+            @SecurityRequirement(name = "req 1", scopes = ["a", "b"]),
+            @SecurityRequirement(name = "req 2", scopes = ["b", "c"])
+        ],
+        servers = [
+            @Server(
+                    description = "server 1",
+                    url = "http://foo",
+                    variables = [
+                        @ServerVariable(name = "var1", description = "var 1", defaultValue = "1", allowableValues = ["1", "2"]),
+                        @ServerVariable(name = "var2", description = "var 2", defaultValue = "1", allowableValues = ["1", "2"])
+                    ])
+        ]
+)
+
+@CompileStatic
 class Application {
     static void main(String[] args) {
-        Micronaut.run(getClass())
+        Micronaut.run(Application)
     }
 }
 
diff --git a/hello-world-groovy/src/main/resources/logback.xml b/hello-world-groovy/src/main/resources/logback.xml
index d928025..ec4baa0 100644
--- a/hello-world-groovy/src/main/resources/logback.xml
+++ b/hello-world-groovy/src/main/resources/logback.xml
@@ -1,7 +1,7 @@
 <configuration>
 
     <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
-        <withJansi>true</withJansi>
+        <withJansi>false</withJansi>
         <!-- encoders are assigned the type
              ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
         <encoder>