diff --git a/Changes b/Changes
index cd25cd4..f7cd0cf 100644
--- a/Changes
+++ b/Changes
@@ -1,6 +1,8 @@
-0.31 2018-10-22
+0.31 2018-10-31
     - [bugfix] Security upgrade of Jackson for CVE-2017-17485 and
       CVE-2018-7489 (diewald)
+    - [bugfix] OpenJDK8u181-workaround (see Debian Bug report #911925)
+      (diewald)
 
 0.30 2018-10-09
     - Introduced docGroupRef and added VC reference in collection query
diff --git a/pom.xml b/pom.xml
index a78439e..8540867 100644
--- a/pom.xml
+++ b/pom.xml
@@ -169,8 +169,9 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
-				<version>2.20.1</version>
+				<version>2.22.1</version>
 				<configuration>
+          <useSystemClassLoader>false</useSystemClassLoader>
 					<excludes>
 						<exclude>**/OPINTest.java</exclude>
 					</excludes>