diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 72ceb63..e1439fd 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,12 +12,15 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v1
+    - uses: actions/checkout@v4
+    - name: Set up JDK 11
+      uses: actions/setup-java@v4
       with:
-        java-version: 1.8
+        distribution: 'temurin' # See 'Supported distributions' for available options
+        java-version: '11'
     - name: Build with Maven
       run: mvn -B package --file pom.xml
     - name: Codecov
-      uses: codecov/codecov-action@v1.3.1
+      uses: codecov/codecov-action@v4
+      env:
+         CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 646e616..23725d1 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -19,17 +19,17 @@ jobs:
       - name: Check out code
         uses: actions/checkout@v4
 
-      - name: Set up JAVA 8
+      - name: Set up JAVA 11
         uses: actions/setup-java@v4
         with:
-          java-version: 8
+          java-version: 11
           distribution: "temurin"
 
       - name: Determine the version
         run: echo "version=$(mvn -q -Dexec.executable=echo -Dexec.args='${project.version}' --non-recursive exec:exec)" >> $GITHUB_OUTPUT
         id: versioncheck
 
-      - name: Exit when workflow_dispatch is triggered, and the version does not contain SNAPSHOT in it's name
+      - name: Exit when workflow_dispatch is triggered, and the version does not contain SNAPSHOT in the name
         run: |
           echo "Only SNAPSHOT releases can be triggered with the workflow_dispatch"
           exit 1
@@ -41,10 +41,10 @@ jobs:
           exit 1
         if: github.event_name != 'workflow_dispatch' && steps.versioncheck.outputs.version != github.ref_name
 
-      - name: Set up JDK 8 for snapshots
+      - name: Set up JDK 11 for snapshots
         uses: actions/setup-java@v4
         with:
-          java-version: "8"
+          java-version: "11"
           distribution: "temurin"
           cache: "maven"
           server-id: openconext-snapshots
@@ -52,10 +52,10 @@ jobs:
           server-password: MAVEN_PASSWORD
         if: ( endsWith(steps.versioncheck.outputs.version, '-SNAPSHOT'))
 
-      - name: Set up JDK 8 for releases
+      - name: Set up JDK 11 for releases
         uses: actions/setup-java@v4
         with:
-          java-version: "8"
+          java-version: "11"
           distribution: "temurin"
           cache: "maven"
           server-id: openconext-releases
@@ -103,7 +103,9 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
 
       - name: Codecov
-        uses: codecov/codecov-action@v3.1.1
+        uses: codecov/codecov-action@v4
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
       - name: Create release
         uses: actions/create-release@v1
diff --git a/README.md b/README.md
index becc4c5..6db43da 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,11 @@ Mock implementation of the OOAPI for educational institutions.
 - Java 8
 - Maven 3
 
+Set the JAVA_HOME property for maven (example for macOS):
+```
+export JAVA_HOME=/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/
+```
+
 ## [Building and running](#building-and-running)
 
 ### [The student-mobility-home-institution-mock-server](#student-mobility-home-institution-mock-server)
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 5ecaa92..3954ed2 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
-FROM eclipse-temurin:8-jdk-alpine
+FROM eclipse-temurin:11-jdk-alpine
 RUN apk --update upgrade && apk add openssl openssl-dev ca-certificates libgcc && update-ca-certificates
 COPY target/*.jar app.jar
 ENTRYPOINT ["java","-jar","/app.jar"]
diff --git a/pom.xml b/pom.xml
index 543a2f7..5cf3f83 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,25 +1,23 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
         <version>2.4.0</version>
-        <relativePath/> <!-- lookup parent from repository -->
+        <relativePath/>
+        <!-- lookup parent from repository -->
     </parent>
     <groupId>org.surfnet</groupId>
     <artifactId>student-mobility-home-institution-mock</artifactId>
-    <version>0.2.12</version>
+    <version>0.2.13-SNAPSHOT</version>
     <name>home-institution-mock</name>
     <description>home-institution-mock</description>
-
     <properties>
-        <java.version>1.8</java.version>
-        <maven.compiler.target>1.8</maven.compiler.target>
-        <maven.compiler.source>1.8</maven.compiler.source>
+        <java.version>11</java.version>
+        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.source>11</maven.compiler.source>
     </properties>
-
     <dependencies>
         <dependency>
             <groupId>org.springframework.boot</groupId>
@@ -55,8 +53,13 @@
         </dependency>
         <dependency>
             <groupId>org.bouncycastle</groupId>
-            <artifactId>bcpkix-jdk15on</artifactId>
-            <version>1.66</version>
+            <artifactId>bcprov-jdk18on</artifactId>
+            <version>1.78.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.bouncycastle</groupId>
+            <artifactId>bcpkix-jdk18on</artifactId>
+            <version>1.78.1</version>
         </dependency>
         <dependency>
             <groupId>com.github.spullara.mustache.java</groupId>
@@ -113,7 +116,6 @@
             <scope>test</scope>
         </dependency>
     </dependencies>
-
     <build>
         <plugins>
             <plugin>
@@ -161,7 +163,6 @@
             </extension>
         </extensions>
     </build>
-
     <distributionManagement>
         <repository>
             <id>openconext-releases</id>
@@ -174,5 +175,4 @@
             <url>dav:https://build.openconext.org/repository/public/snapshots</url>
         </snapshotRepository>
     </distributionManagement>
-
 </project>