diff --git a/gradle/javaprojects.gradle b/gradle/javaprojects.gradle
index e1d7486a2c..11e5a1418a 100644
--- a/gradle/javaprojects.gradle
+++ b/gradle/javaprojects.gradle
@@ -1,6 +1,9 @@
 apply plugin: 'java'
 apply plugin: 'eclipse'
 
+sourceCompatibility = 1.5
+targetCompatibility = 1.5
+
 ext.springVersion = '3.0.7.RELEASE'
 ext.springLdapVersion = '1.3.1.RELEASE'
 ext.ehcacheVersion = '1.6.2'