diff --git a/gentoo/diamond.ebuild b/gentoo/diamond.ebuild
index c88abd8b8..5591aaac7 100644
--- a/gentoo/diamond.ebuild
+++ b/gentoo/diamond.ebuild
@@ -26,6 +26,7 @@ IUSE="
 
 RDEPEND="
     dev-python/configobj
+    dev-python/setproctitle
     test?  ( dev-python/mock )
     mongo? ( dev-python/pymongo )
     mysql? ( dev-python/mysql-python )