move to RC4
diff --git a/releng.control/cc_config.xml b/releng.control/cc_config.xml
index d2a2c12..f2d5389 100644
--- a/releng.control/cc_config.xml
+++ b/releng.control/cc_config.xml
@@ -552,7 +552,7 @@
                     value="S" />
                 <property
                     name="buildId"
-                    value="3.0RC3" />
+                    value="3.0RC4" />
                 <property
                     name="buildBranch"
                     value="R3.0" />