diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0916eeb1ce9c24c179676c813ca04a3ad4041f2e..19c6d73f7c176c91265bf7efd3130c683808c83c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 2.5.7
+This is a maintenance release which only brings libraries up to date to fix
+potential bugs.
+
 ## 2.5.6
 This is a maintenance release which only brings libraries up to date to fix
 potential bugs.
diff --git a/pom.xml b/pom.xml
index 6f4caf97dfc3168134d7e514d3611aaa561b270e..d79dcdeaa236f34779cf0884ffdcd8bf8de79e3a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,7 @@
 	<packaging>war</packaging>
 
 	<properties>
-		<io.spring.platform-version>Brussels-SR10</io.spring.platform-version>
+		<io.spring.platform-version>Brussels-SR11</io.spring.platform-version>
 		<io.netty-version>4.1.25.Final</io.netty-version>
 		<org.aspectj-version>1.8.13</org.aspectj-version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -67,16 +67,15 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-project-info-reports-plugin</artifactId>
-				<version>2.9</version>
+				<version>3.0.0</version>
 				<configuration>
-					<dependencyLocationsEnabled>false</dependencyLocationsEnabled>
 					<dependencyDetailsEnabled>false</dependencyDetailsEnabled>
 				</configuration>
 			</plugin>
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-javadoc-plugin</artifactId>
-				<version>3.0.0</version>
+				<version>3.0.1</version>
 				<configuration></configuration>
 			</plugin>
 		</plugins>
@@ -245,12 +244,12 @@
 		<dependency>
 			<groupId>org.pac4j</groupId>
 			<artifactId>spring-security-pac4j</artifactId>
-			<version>3.0.0</version>
+			<version>3.1.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.pac4j</groupId>
 			<artifactId>pac4j-oauth</artifactId>
-			<version>2.2.1</version>
+			<version>2.3.1</version>
 		</dependency>
 		<dependency>
 			<groupId>com.corundumstudio.socketio</groupId>
@@ -316,7 +315,7 @@
 		<dependency>
 			<groupId>io.swagger</groupId>
 			<artifactId>swagger-annotations</artifactId>
-			<version>1.5.19</version>
+			<version>1.5.20</version>
 		</dependency>
 		<dependency>
 			<groupId>com.codahale.metrics</groupId>
@@ -326,7 +325,7 @@
 		<dependency>
 			<groupId>org.checkerframework</groupId>
 			<artifactId>checker-qual</artifactId>
-			<version>2.4.0</version>
+			<version>2.5.3</version>
 		</dependency>
 	</dependencies>
 
@@ -402,7 +401,7 @@
 			<plugin>
 				<groupId>org.eclipse.jetty</groupId>
 				<artifactId>jetty-maven-plugin</artifactId>
-				<version>9.4.10.v20180503</version>
+				<version>9.4.11.v20180605</version>
 				<configuration>
 					<scanIntervalSeconds>1</scanIntervalSeconds>
 					<webApp>
@@ -432,12 +431,12 @@
 			<plugin>
 				<groupId>org.sonarsource.scanner.maven</groupId>
 				<artifactId>sonar-maven-plugin</artifactId>
-				<version>3.4.0.905</version>
+				<version>3.4.1.1168</version>
 			</plugin>
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
-				<version>2.21.0</version>
+				<version>2.22.0</version>
 			</plugin>
 			<plugin>
 				<groupId>org.jacoco</groupId>
@@ -480,7 +479,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-war-plugin</artifactId>
-				<version>3.2.1</version>
+				<version>3.2.2</version>
 			</plugin>
 			<plugin>
 				<groupId>com.github.kongchen</groupId>
diff --git a/src/site/site.xml b/src/site/site.xml
index 974d0527248c6dcc6f8b96c693254a665b403c2d..9711a8d9caaee77f5530fec9eccafb7820ac3748 100644
--- a/src/site/site.xml
+++ b/src/site/site.xml
@@ -7,7 +7,7 @@
 	<skin>
 		<groupId>org.apache.maven.skins</groupId>
 		<artifactId>maven-fluido-skin</artifactId>
-		<version>1.6</version>
+		<version>1.7</version>
 	</skin>
 
 	<custom>
@@ -46,8 +46,8 @@
 		</links>
 		<menu name="Overview">
 			<item name="Introduction" href="index.html" />
-			<item name="License" href="license.html" />
-			<item name="The Team" href="team-list.html" />
+			<item name="License" href="licenses.html" />
+			<item name="The Team" href="team.html" />
 		</menu>
 		<menu name="Documentation">
 			<item name="Installation" href="installation.html" />
@@ -57,10 +57,10 @@
 			<item name="API Docs" href="apidocs/index.html" />
 		</menu>
 		<menu name="Further Information">
-			<item name="Source Repository" href="source-repository.html" />
-			<item name="Issue Tracking" href="issue-tracking.html" />
+			<item name="Source Repository" href="scm.html" />
+			<item name="Issue Tracking" href="issue-management.html" />
 			<item name="SonarQube Metrics" href="https://scm.thm.de/sonar/dashboard/index/de.thm.arsnova:arsnova-backend" />
-			<item name="Continuous Integration" href="integration.html" />
+			<item name="Continuous Integration" href="ci-management.html" />
 		</menu>
 	</body>
 </project>