diff --git a/.github/workflows/master.yml b/.github/workflows/master.yml
index ed104b6..f91fafc 100644
--- a/.github/workflows/master.yml
+++ b/.github/workflows/master.yml
@@ -23,11 +23,11 @@ jobs:
         uses: actions/setup-java@v3
         with:
           distribution: 'temurin'
-          java-version: 11
+          java-version: 17
       - name: Cache Gradle
         uses: actions/cache@v3
         env:
-          java-version: 11
+          java-version: 17
         with:
           path: |
             ~/.gradle/caches
@@ -48,11 +48,11 @@ jobs:
       - uses: actions/checkout@v3
         with:
           fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
-      - name: Set up JDK 11
+      - name: Set up JDK 17
         uses: actions/setup-java@v3
         with:
           distribution: 'temurin'
-          java-version: 11
+          java-version: 17
       - name: Cache SonarCloud packages
         uses: actions/cache@v3
         with:
diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index 45f232d..4f95c88 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest, macos-latest, windows-latest ]
-        java: [ 11, 17 ]
+        java: [ 17, 19 ]
     needs: validation
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/build.gradle b/build.gradle
index bde27a7..2853550 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ plugins {
     id "jacoco"
 }
 
-sonarqube {
+sonar {
     properties {
         property "sonar.projectKey", "graphql-java-kickstart_graphql-java-kickstart-samples"
         property "sonar.organization", "graphql-java-kickstart"
@@ -27,8 +27,8 @@ subprojects {
     }
 
     compileJava {
-        sourceCompatibility = JavaVersion.VERSION_11
-        targetCompatibility = JavaVersion.VERSION_11
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
     }
 
     test {
@@ -37,7 +37,7 @@ subprojects {
 
     jacocoTestReport {
         reports {
-            xml.enabled = true
+            xml.required = true
         }
     }
 }
diff --git a/editors/src/main/java/graphql/kickstart/sample/SecurityConfig.java b/editors/src/main/java/graphql/kickstart/sample/SecurityConfig.java
index 175a410..5f6d1fb 100644
--- a/editors/src/main/java/graphql/kickstart/sample/SecurityConfig.java
+++ b/editors/src/main/java/graphql/kickstart/sample/SecurityConfig.java
@@ -1,16 +1,18 @@
 package graphql.kickstart.sample;
 
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
-import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+import org.springframework.security.web.SecurityFilterChain;
 
 @Configuration
 @EnableWebSecurity
-class SecurityConfig extends WebSecurityConfigurerAdapter {
+class SecurityConfig {
 
-  @Override
-  protected void configure(final HttpSecurity http) throws Exception {
-    http.authorizeRequests().anyRequest().permitAll();
+  @Bean
+  public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
+    http.authorizeHttpRequests().anyRequest().permitAll();
+    return http.build();
   }
 }
diff --git a/file-upload/src/main/java/upload/UploadMutation.java b/file-upload/src/main/java/upload/UploadMutation.java
index a621c10..00cff13 100644
--- a/file-upload/src/main/java/upload/UploadMutation.java
+++ b/file-upload/src/main/java/upload/UploadMutation.java
@@ -2,7 +2,7 @@
 
 import graphql.kickstart.tools.GraphQLMutationResolver;
 import java.io.IOException;
-import javax.servlet.http.Part;
+import jakarta.servlet.http.Part;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 
diff --git a/gradle.properties b/gradle.properties
index 1fbecf8..4a749e0 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,7 +1,5 @@
-LIB_GRAPHQL_SERVLET_VER=14.0.0
+LIB_GRAPHQL_SERVLET_VER=15.0.0
 LIB_GRAPHQL_SPRING_BOOT_VER=15.0.0
 LIB_GRAPHQL_TOOLS_VER=13.0.2
 LIB_GRAPHQL_EXTENDED_VALIDATION_VER=19.1
-LIB_SPRING_BOOT_VER=2.7.6
-sourceCompatibility=11
-targetCompatibility=11
+LIB_SPRING_BOOT_VER=3.0.0
diff --git a/graphql-annotations/build.gradle b/graphql-annotations/build.gradle
index 0f998b9..89de2e8 100644
--- a/graphql-annotations/build.gradle
+++ b/graphql-annotations/build.gradle
@@ -5,7 +5,7 @@ dependencies {
 
     implementation("org.springframework.boot:spring-boot-starter-web")
     implementation("org.springframework.boot:spring-boot-starter-data-jpa")
-    implementation "io.reactivex.rxjava2:rxjava"
+    implementation "io.reactivex.rxjava2:rxjava:2.2.21"
     implementation "org.projectlombok:lombok"
     annotationProcessor "org.projectlombok:lombok"
     runtimeOnly("com.h2database:h2")
diff --git a/graphql-annotations/src/main/java/graphql/kickstart/spring/boot/graphql/annotations/example/model/type/Person.java b/graphql-annotations/src/main/java/graphql/kickstart/spring/boot/graphql/annotations/example/model/type/Person.java
index 5fe00e9..7aa49f1 100644
--- a/graphql-annotations/src/main/java/graphql/kickstart/spring/boot/graphql/annotations/example/model/type/Person.java
+++ b/graphql-annotations/src/main/java/graphql/kickstart/spring/boot/graphql/annotations/example/model/type/Person.java
@@ -5,9 +5,9 @@
 import graphql.annotations.annotationTypes.GraphQLNonNull;
 import graphql.kickstart.spring.boot.graphql.annotations.example.model.directives.UpperCaseDirective;
 import java.time.LocalDate;
-import javax.persistence.Column;
-import javax.persistence.Entity;
-import javax.persistence.Id;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Data;
diff --git a/graphql-annotations/src/test/java/graphql/kickstart/spring/boot/graphql/annotations/example/CreatePersonTest.java b/graphql-annotations/src/test/java/graphql/kickstart/spring/boot/graphql/annotations/example/CreatePersonTest.java
index 896229f..d740090 100644
--- a/graphql-annotations/src/test/java/graphql/kickstart/spring/boot/graphql/annotations/example/CreatePersonTest.java
+++ b/graphql-annotations/src/test/java/graphql/kickstart/spring/boot/graphql/annotations/example/CreatePersonTest.java
@@ -22,7 +22,7 @@
 
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 @Slf4j
-public class CreatePersonTest {
+class CreatePersonTest {
 
   private static final String FIRST_NAME = "John";
   private static final String LAST_NAME = "Doe";
diff --git a/request-scoped-dataloader/src/main/java/graphql/servlet/examples/dataloader/requestscope/CustomGraphQLContextBuilder.java b/request-scoped-dataloader/src/main/java/graphql/servlet/examples/dataloader/requestscope/CustomGraphQLContextBuilder.java
index 7f95cf1..06b3d9b 100644
--- a/request-scoped-dataloader/src/main/java/graphql/servlet/examples/dataloader/requestscope/CustomGraphQLContextBuilder.java
+++ b/request-scoped-dataloader/src/main/java/graphql/servlet/examples/dataloader/requestscope/CustomGraphQLContextBuilder.java
@@ -6,10 +6,10 @@
 import graphql.kickstart.servlet.context.GraphQLServletContextBuilder;
 import java.util.HashMap;
 import java.util.Map;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-import javax.websocket.Session;
-import javax.websocket.server.HandshakeRequest;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import jakarta.websocket.Session;
+import jakarta.websocket.server.HandshakeRequest;
 import org.dataloader.DataLoader;
 import org.dataloader.DataLoaderFactory;
 import org.dataloader.DataLoaderRegistry;
diff --git a/servlet-hello-world/build.gradle b/servlet-hello-world/build.gradle
index 4cf614b..fda3258 100644
--- a/servlet-hello-world/build.gradle
+++ b/servlet-hello-world/build.gradle
@@ -1,4 +1,4 @@
-def jettyVersion = '9.4.49.v20220914'
+def jettyVersion = '11.0.12'
 
 dependencies {
     implementation "com.graphql-java-kickstart:graphql-java-servlet:$LIB_GRAPHQL_SERVLET_VER"
@@ -7,8 +7,5 @@ dependencies {
     implementation 'org.slf4j:slf4j-simple:2.0.5'
     implementation "org.eclipse.jetty:jetty-webapp:${jettyVersion}"
     implementation "org.eclipse.jetty:jetty-annotations:${jettyVersion}"
-    implementation "org.eclipse.jetty.websocket:websocket-api:${jettyVersion}"
-    implementation "org.eclipse.jetty.websocket:websocket-server:${jettyVersion}"
-    implementation "org.eclipse.jetty.websocket:javax-websocket-server-impl:${jettyVersion}"
-    implementation "org.eclipse.jetty.websocket:websocket-common:${jettyVersion}"
+    implementation "org.eclipse.jetty.websocket:websocket-jetty-server:${jettyVersion}"
 }
diff --git a/servlet-hello-world/src/main/java/hello/GraphQLWSEndpointConfigurer.java b/servlet-hello-world/src/main/java/hello/GraphQLWSEndpointConfigurer.java
index c29b429..b9d0a99 100644
--- a/servlet-hello-world/src/main/java/hello/GraphQLWSEndpointConfigurer.java
+++ b/servlet-hello-world/src/main/java/hello/GraphQLWSEndpointConfigurer.java
@@ -1,8 +1,8 @@
 package hello;
 
-import javax.websocket.HandshakeResponse;
-import javax.websocket.server.HandshakeRequest;
-import javax.websocket.server.ServerEndpointConfig;
+import jakarta.websocket.HandshakeResponse;
+import jakarta.websocket.server.HandshakeRequest;
+import jakarta.websocket.server.ServerEndpointConfig;
 
 public class GraphQLWSEndpointConfigurer extends ServerEndpointConfig.Configurator {
 
diff --git a/servlet-hello-world/src/main/java/hello/HttpMain.java b/servlet-hello-world/src/main/java/hello/HttpMain.java
index 5d82737..89672d2 100644
--- a/servlet-hello-world/src/main/java/hello/HttpMain.java
+++ b/servlet-hello-world/src/main/java/hello/HttpMain.java
@@ -1,10 +1,9 @@
 package hello;
 
-import javax.websocket.server.ServerEndpointConfig;
 import org.eclipse.jetty.server.Server;
 import org.eclipse.jetty.server.ServerConnector;
 import org.eclipse.jetty.servlet.ServletContextHandler;
-import org.eclipse.jetty.websocket.jsr356.server.deploy.WebSocketServerContainerInitializer;
+import org.eclipse.jetty.websocket.server.config.JettyWebSocketServletContainerInitializer;
 
 class HttpMain {
 
@@ -21,13 +20,10 @@ public static void main(String[] args) throws Exception {
     context.addServlet(HelloServlet.class, "/graphql");
     server.setHandler(context);
 
-    WebSocketServerContainerInitializer.configure(
+    JettyWebSocketServletContainerInitializer.configure(
         context,
         (servletContext, serverContainer) ->
-            serverContainer.addEndpoint(
-                ServerEndpointConfig.Builder.create(SubscriptionEndpoint.class, "/subscriptions")
-                    .configurator(new GraphQLWSEndpointConfigurer())
-                    .build()));
+            serverContainer.addMapping("/subscriptions", GraphQLWSEndpointConfigurer.class));
 
     server.setHandler(context);
 
diff --git a/spring-boot-commons.gradle b/spring-boot-commons.gradle
index 7aa994d..1edc66f 100644
--- a/spring-boot-commons.gradle
+++ b/spring-boot-commons.gradle
@@ -1,7 +1,7 @@
 // Common settings only needed for Spring Boot based samples
 
 apply plugin: "io.spring.dependency-management"
-apply plugin: "org.springframework.boot"
+//apply plugin: "org.springframework.boot"
 
 dependencyManagement {
     imports {
diff --git a/spring-common/src/main/java/graphql/kickstart/autoconfigure/web/servlet/sample/schema/TodoSchema.java b/spring-common/src/main/java/graphql/kickstart/autoconfigure/web/servlet/sample/schema/TodoSchema.java
index 473df40..d31b749 100644
--- a/spring-common/src/main/java/graphql/kickstart/autoconfigure/web/servlet/sample/schema/TodoSchema.java
+++ b/spring-common/src/main/java/graphql/kickstart/autoconfigure/web/servlet/sample/schema/TodoSchema.java
@@ -34,7 +34,7 @@
 import java.util.Collection;
 import java.util.List;
 import java.util.stream.Collectors;
-import javax.servlet.http.Part;
+import jakarta.servlet.http.Part;
 
 @GraphQLSchema
 public class TodoSchema {
diff --git a/subscription-with-authentication/src/main/java/subscription/MySubscriptionResolver.java b/subscription-with-authentication/src/main/java/subscription/MySubscriptionResolver.java
index e3354e6..dce5f78 100644
--- a/subscription-with-authentication/src/main/java/subscription/MySubscriptionResolver.java
+++ b/subscription-with-authentication/src/main/java/subscription/MySubscriptionResolver.java
@@ -4,7 +4,7 @@
 import graphql.kickstart.tools.GraphQLSubscriptionResolver;
 import graphql.schema.DataFetchingEnvironment;
 import java.util.Optional;
-import javax.websocket.Session;
+import jakarta.websocket.Session;
 import org.reactivestreams.Publisher;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
diff --git a/subscription-with-authentication/src/main/java/subscription/SecurityConfiguration.java b/subscription-with-authentication/src/main/java/subscription/SecurityConfiguration.java
index 050aa24..e94d8e6 100644
--- a/subscription-with-authentication/src/main/java/subscription/SecurityConfiguration.java
+++ b/subscription-with-authentication/src/main/java/subscription/SecurityConfiguration.java
@@ -1,15 +1,16 @@
 package subscription;
 
+import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
-import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+import org.springframework.security.web.SecurityFilterChain;
 
 @Configuration
-class SecurityConfiguration extends WebSecurityConfigurerAdapter {
+class SecurityConfiguration {
 
-  @Override
-  protected void configure(HttpSecurity http) throws Exception {
-    http.authorizeRequests()
+  @Bean
+  public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
+    http.authorizeHttpRequests()
         .anyRequest()
         .permitAll()
         .and()
@@ -19,5 +20,6 @@ protected void configure(HttpSecurity http) throws Exception {
         .and()
         .logout()
         .permitAll();
+    return http.build();
   }
 }
diff --git a/subscription/build.gradle b/subscription/build.gradle
index be95286..2a081cf 100644
--- a/subscription/build.gradle
+++ b/subscription/build.gradle
@@ -11,7 +11,7 @@ dependencyManagement {
 dependencies {
     implementation("com.graphql-java-kickstart:graphql-spring-boot-starter")
 
-    implementation "io.reactivex.rxjava2:rxjava"
+    implementation "io.reactivex.rxjava2:rxjava:2.2.21"
     implementation "io.projectreactor:reactor-core"
     implementation("org.springframework.boot:spring-boot-starter-web")
     implementation("org.springframework.boot:spring-boot-starter-websocket")