diff --git a/.github/toolchains.xml b/.github/toolchains.xml
index 697265cc..7ed2bfc9 100644
--- a/.github/toolchains.xml
+++ b/.github/toolchains.xml
@@ -12,6 +12,16 @@
 			<jdkHome>${env.JAVA_HOME_17_X64}</jdkHome>
 		</configuration>
 	</toolchain>
+	<toolchain>
+		<type>jdk</type>
+		<provides>
+			<id>JavaSE-11</id>
+			<version>11</version>
+		</provides>
+		<configuration>
+			<jdkHome>${env.JAVA_HOME_11_X64}</jdkHome>
+		</configuration>
+	</toolchain>
 	<toolchain>
 		<type>jdk</type>
 		<provides>
diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 3d029ec9..0e45b551 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -16,13 +16,14 @@ jobs:
       with:
         java-version: |
           8
+          11
           17
         distribution: 'temurin' # See 'Supported distributions' for available options
         cache: maven
     - name: Set up Maven
       uses: stCarolas/setup-maven@v5
       with:
-        maven-version: 3.9.6
+        maven-version: 3.9.8
     - name: Install xvfb
       run: sudo apt-get install xvfb
     - name: Build NatTable with Javadoc