diff --git a/oauth2-example-app/pom.xml b/oauth2-example-app/pom.xml
index 48cdd9e..2986b99 100644
--- a/oauth2-example-app/pom.xml
+++ b/oauth2-example-app/pom.xml
@@ -60,13 +60,13 @@
     <dependency>
       <groupId>org.eclipse.jetty</groupId>
       <artifactId>jetty-server</artifactId>
-      <version>8.1.8.v20121106</version>
+      <version>9.3.24.v20180605</version>
     </dependency>
 
     <dependency>
       <groupId>org.eclipse.jetty</groupId>
       <artifactId>jetty-servlet</artifactId>
-      <version>8.1.8.v20121106</version>
+      <version>9.3.24.v20180605</version>
     </dependency>
 
     <dependency>
diff --git a/oauth2-example-app/src/test/java/com/clouway/oauth2/exampleapp/FakeHttpServletRequest.java b/oauth2-example-app/src/test/java/com/clouway/oauth2/exampleapp/FakeHttpServletRequest.java
index 32eb978..2660307 100644
--- a/oauth2-example-app/src/test/java/com/clouway/oauth2/exampleapp/FakeHttpServletRequest.java
+++ b/oauth2-example-app/src/test/java/com/clouway/oauth2/exampleapp/FakeHttpServletRequest.java
@@ -5,6 +5,7 @@
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import javax.servlet.http.HttpSession;
+import javax.servlet.http.HttpUpgradeHandler;
 import javax.servlet.http.Part;
 import java.io.BufferedReader;
 import java.io.IOException;
@@ -134,6 +135,11 @@ public HttpSession getSession() {
     return null;
   }
 
+  @Override
+  public String changeSessionId() {
+    return null;
+  }
+
   @Override
   public boolean isRequestedSessionIdValid() {
     return false;
@@ -179,6 +185,11 @@ public Part getPart(String name) throws IOException, ServletException {
     return null;
   }
 
+  @Override
+  public <T extends HttpUpgradeHandler> T upgrade(Class<T> aClass) throws IOException, ServletException {
+    return null;
+  }
+
   @Override
   public Object getAttribute(String name) {
     return null;
@@ -204,6 +215,11 @@ public int getContentLength() {
     return 0;
   }
 
+  @Override
+  public long getContentLengthLong() {
+    return 0;
+  }
+
   @Override
   public String getContentType() {
     return null;
diff --git a/oauth2-example-app/src/test/java/com/clouway/oauth2/exampleapp/FakeHttpServletResponse.java b/oauth2-example-app/src/test/java/com/clouway/oauth2/exampleapp/FakeHttpServletResponse.java
index a79eaed..4cc0c11 100644
--- a/oauth2-example-app/src/test/java/com/clouway/oauth2/exampleapp/FakeHttpServletResponse.java
+++ b/oauth2-example-app/src/test/java/com/clouway/oauth2/exampleapp/FakeHttpServletResponse.java
@@ -169,6 +169,11 @@ public void setContentLength(int len) {
 
   }
 
+  @Override
+  public void setContentLengthLong(long l) {
+
+  }
+
   @Override
   public void setContentType(String type) {