diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 8e7f21e..afb0c1e 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -1,7 +1,4 @@
-# This workflow will build a Java project with Maven, and cache/restore any dependencies to improve the workflow execution time
-# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
-
-name: Java CI with Maven
+name: Build with Maven
 
 on:
   push:
@@ -11,16 +8,13 @@ on:
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up JDK 11
-      uses: actions/setup-java@v3
+    - uses: actions/checkout@v4
+    - uses: actions/setup-java@v4
       with:
-        java-version: '11'
+        java-version-file: .java-version
         distribution: 'temurin'
         cache: maven
     - name: Build with Maven
-      run: mvn -B package --file pom.xml
+      run: mvn -B package
diff --git a/.java-version b/.java-version
new file mode 100644
index 0000000..8e2afd3
--- /dev/null
+++ b/.java-version
@@ -0,0 +1 @@
+17
\ No newline at end of file
diff --git a/README.md b/README.md
index 2a77408..8dc13dd 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ Go to you account and add a LTI Developer Key, fill in the following:
  
 ## Local Canvas Setup
 
-Open the file `config/application.properties` and add these properties:
+Open the file `config/application.properties` and add these properties or copy `config/application-example.properties`:
 
     spring.security.oauth2.client.registration.canvas.client-id=1234
     spring.security.oauth2.client.registration.canvas.client-secret=secret
@@ -55,7 +55,6 @@ Open the file `config/application.properties` and add these properties:
     spring.security.oauth2.client.provider.canvas.user-name-attribute=sub
     
  * replace the client-id value (1234) with the ID of the LTI Developer Key you have created.
- * replace the client-secret value (secret) with the LTI Developer Key secret.
  * you can update the URIs to point to the canvas instance you are using, but it works fine using the canvas.instructure.com
  
  ## LTI Reference Implementation Setup
diff --git a/config/application-example.properties b/config/application-example.properties
new file mode 100644
index 0000000..6c8f07b
--- /dev/null
+++ b/config/application-example.properties
@@ -0,0 +1,18 @@
+# Copy this file to `application.properties` and customise
+
+# Set this to the client ID of the key
+spring.security.oauth2.client.registration.canvas.client-id=
+# This isn't used for the implicit OAuth grant so it's value doesn't matter
+spring.security.oauth2.client.registration.canvas.client-secret=secret
+# This must be implicit
+spring.security.oauth2.client.registration.canvas.authorization-grant-type=implicit
+# This must be openid
+spring.security.oauth2.client.registration.canvas.scope=openid
+# Unless you remap the login path this should be the same
+spring.security.oauth2.client.registration.canvas.redirect-uri={baseUrl}/lti/login
+
+# These are example values for a production Canvas instance.
+spring.security.oauth2.client.provider.canvas.authorization-uri=https://canvas.instructure.com/api/lti/authorize_redirect
+spring.security.oauth2.client.provider.canvas.token-uri=https://canvas.instructure.com/login/oauth2/token
+spring.security.oauth2.client.provider.canvas.jwk-set-uri=https://canvas.instructure.com/api/lti/security/jwks
+spring.security.oauth2.client.provider.canvas.user-name-attribute=sub
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index c4b9e48..27e1596 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,24 +6,24 @@
 
     <groupId>uk.ac.ox.ctl</groupId>
     <artifactId>spring-security-lti13-demo</artifactId>
-    <version>1.0-SNAPSHOT</version>
+    <version>2.0-SNAPSHOT</version>
 
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.5.4</version>
+        <version>3.2.5</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>
 
     <properties>
-        <java.version>1.8</java.version>
+        <java.version>17</java.version>
     </properties>
 
     <dependencies>
         <dependency>
             <groupId>uk.ac.ox.ctl</groupId>
             <artifactId>spring-security-lti13</artifactId>
-            <version>0.0.4</version>
+            <version>0.2.0</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
@@ -41,6 +41,10 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-validation</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-mustache</artifactId>
+        </dependency>
     </dependencies>
 
     <build>
diff --git a/src/main/java/uk/ac/ox/ctl/lti13/demo/WebSecurityConfig.java b/src/main/java/uk/ac/ox/ctl/lti13/demo/WebSecurityConfig.java
index 2075142..b0e4800 100644
--- a/src/main/java/uk/ac/ox/ctl/lti13/demo/WebSecurityConfig.java
+++ b/src/main/java/uk/ac/ox/ctl/lti13/demo/WebSecurityConfig.java
@@ -1,23 +1,29 @@
 package uk.ac.ox.ctl.lti13.demo;
 
+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;
+import org.springframework.security.web.context.HttpSessionSecurityContextRepository;
 import uk.ac.ox.ctl.lti13.Lti13Configurer;
 
 @Configuration
 @EnableWebSecurity
-public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
+public class WebSecurityConfig {
 
-    @Override
-    protected void configure(HttpSecurity http) throws Exception {
-        http.authorizeRequests()
-                .antMatchers("/", "/resources/**", "/favicon.ico", "/config.json", "/.well-known/jwks.json")
-                .permitAll()
-                ;
+    @Bean
+    protected SecurityFilterChain configure(HttpSecurity http) throws Exception {
+        http.authorizeHttpRequests(authorizeHttpRequestsCustomizer -> {
+            authorizeHttpRequestsCustomizer.requestMatchers(
+                    "/", "/index.html", "/resources/**", "/favicon.ico",
+                    "/config.json", "/.well-known/jwks.json", "/error").permitAll();
+            authorizeHttpRequestsCustomizer.anyRequest().authenticated();
+        });
         Lti13Configurer lti13Configurer = new Lti13Configurer();
+        lti13Configurer.setSecurityContextRepository(new HttpSessionSecurityContextRepository());
         http.apply(lti13Configurer);
+        return http.build();
     }
 
 }
diff --git a/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/Config13Controller.java b/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/Config13Controller.java
index d726e25..8be4254 100644
--- a/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/Config13Controller.java
+++ b/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/Config13Controller.java
@@ -1,13 +1,13 @@
 package uk.ac.ox.ctl.lti13.demo.controller;
 
 import com.nimbusds.jose.jwk.JWKSet;
+import jakarta.servlet.http.HttpServletRequest;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RestController;
 import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
 import uk.ac.ox.ctl.lti13.demo.controller.lti13.*;
 
-import javax.servlet.http.HttpServletRequest;
 import java.util.*;
 
 import static uk.ac.ox.ctl.lti13.demo.controller.lti13.Canvas13Extension.INSTRUCTURE;
diff --git a/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/DemoController.java b/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/DemoController.java
new file mode 100644
index 0000000..51672d9
--- /dev/null
+++ b/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/DemoController.java
@@ -0,0 +1,27 @@
+package uk.ac.ox.ctl.lti13.demo.controller;
+
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.servlet.ModelAndView;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * This is a simple controller to demonstrate how you can use data from the LTI launch.
+ */
+@Controller
+public class DemoController {
+    
+    @GetMapping("/demo")
+    public ModelAndView index(
+            @AuthenticationPrincipal(expression = "claims['sub']") String sub,
+            @AuthenticationPrincipal(expression = "claims['name']") String name
+    ) {
+        Map<String, Object> model = new HashMap<>();
+        model.put("sub", sub);
+        model.put("name", name);
+        return new ModelAndView("demo", model);
+    }
+}
diff --git a/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/lti13/Lti13Config.java b/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/lti13/Lti13Config.java
index 2836a21..cfe053b 100644
--- a/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/lti13/Lti13Config.java
+++ b/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/lti13/Lti13Config.java
@@ -2,9 +2,9 @@
 
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonProperty;
+import jakarta.validation.constraints.NotEmpty;
+import jakarta.validation.constraints.NotNull;
 
-import javax.validation.constraints.NotEmpty;
-import javax.validation.constraints.NotNull;
 import java.util.Collection;
 import java.util.Map;
 
diff --git a/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/lti13/Lti13ConfigBuilder.java b/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/lti13/Lti13ConfigBuilder.java
index 04d5bb6..90438b8 100644
--- a/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/lti13/Lti13ConfigBuilder.java
+++ b/src/main/java/uk/ac/ox/ctl/lti13/demo/controller/lti13/Lti13ConfigBuilder.java
@@ -1,7 +1,8 @@
 package uk.ac.ox.ctl.lti13.demo.controller.lti13;
 
-import javax.validation.constraints.NotEmpty;
-import javax.validation.constraints.NotNull;
+import jakarta.validation.constraints.NotEmpty;
+import jakarta.validation.constraints.NotNull;
+
 import java.util.Collection;
 import java.util.Map;
 
diff --git a/src/main/java/uk/ac/ox/ctl/lti13/demo/utils/SameSiteCookeValve.java b/src/main/java/uk/ac/ox/ctl/lti13/demo/utils/SameSiteCookeValve.java
index 9947929..edd58ed 100644
--- a/src/main/java/uk/ac/ox/ctl/lti13/demo/utils/SameSiteCookeValve.java
+++ b/src/main/java/uk/ac/ox/ctl/lti13/demo/utils/SameSiteCookeValve.java
@@ -1,12 +1,12 @@
 package uk.ac.ox.ctl.lti13.demo.utils;
 
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.Cookie;
 import org.apache.catalina.connector.Request;
 import org.apache.catalina.connector.Response;
 import org.apache.catalina.util.SessionConfig;
 import org.apache.catalina.valves.ValveBase;
 
-import javax.servlet.ServletException;
-import javax.servlet.http.Cookie;
 import java.io.IOException;
 import java.util.Collection;
 
diff --git a/src/main/resources/templates/demo.mustache b/src/main/resources/templates/demo.mustache
new file mode 100644
index 0000000..e390b10
--- /dev/null
+++ b/src/main/resources/templates/demo.mustache
@@ -0,0 +1,19 @@
+<!doctype html>
+<html lang="en">
+<head>
+    <title>Demo Application</title>
+</head>
+<body>
+<h1>Demo</h1>
+<p>
+    Hello {{name}} (sub:{{sub}})
+</p>
+<p>
+    This reloads the current document to check that HTTP sessions are correctly setup and the user remains
+    authenticated.<br>
+    <button onclick="location.reload()">
+        Check HTTP Session
+    </button>
+</p>
+</body>
+</html>
\ No newline at end of file