diff --git a/hosts/jenkins/etc/default/jenkins b/hosts/jenkins/etc/default/jenkins
index 7b518047d9f26b7d5b42f49417c3218fd8a209e4..71f27ddd161dddb92782ed43a4ca1dc76e267e46 100644
--- a/hosts/jenkins/etc/default/jenkins
+++ b/hosts/jenkins/etc/default/jenkins
@@ -8,7 +8,7 @@ JAVA=/usr/bin/java
 
 # arguments to pass to java
 #JAVA_ARGS="-Xmx512m"  # + MaxPermSize is 128m normally
-JAVA_ARGS="-Xmx3072m -XX:MaxPermSize=384m"
+JAVA_ARGS="-Xmx4096m -XX:MaxPermSize=384m"
 #JAVA_ARGS="-Djava.net.preferIPv4Stack=true" # make jenkins listen on IPv4 address
 
 PIDFILE=/var/run/jenkins/jenkins.pid