diff --git a/lib/config.json b/lib/config.json
index 611562a..bbed9b4 100644
--- a/lib/config.json
+++ b/lib/config.json
@@ -13,7 +13,7 @@
 		 { "name" : "wildebeest-debian-wheezy-i686", "arch" : "i686",
 		   "jobs" : "2", "admin" : "mark@klomp.org" },
 
-		 { "name" : "debian-wheezy-s390x-1", "arch" : "s390x", "jobs" : "8",
+		 { "name" : "debian-jessie-s390x-1", "arch" : "s390x", "jobs" : "8",
 		   "admin" : "dje.gcc@gmail.com" },
 
 		 { "name" : "rhel-7.1-s390x-1", "arch" : "s390x", "jobs" : "8",
@@ -170,20 +170,20 @@
 		     "type" : "Plain_c64t64",
 		     "builddir" : "debian-s390x",
 		     "tags" : [ "debian", "s390x", "m64", "MAIL" ],
-		     "slavenames" : [ "debian-wheezy-s390x-1" ] },
+		     "slavenames" : [ "debian-jessie-s390x-1" ] },
 
 		   { "name" : "Debian-s390x-native-gdbserver-m64",
 		     "type" : "NativeGDBServer_c64t64",
 		     "builddir" : "debian-s390x-native-gdbserver",
 		     "tags" : [ "debian", "s390x", "native-gdbserver-m64", "MAIL" ],
-		     "slavenames" : [ "debian-wheezy-s390x-1" ] },
+		     "slavenames" : [ "debian-jessie-s390x-1" ] },
 
 		   { "name" : "Debian-s390x-native-extended-gdbserver-m64",
 		     "type" : "NativeExtendedGDBServer_c64t64",
 		     "builddir" : "debian-s390x-native-extended-gdbserver",
 		     "tags" : [ "debian", "s390x", "native-extended-gdbserver-m64",
 				"MAIL" ],
-		     "slavenames" : [ "debian-wheezy-s390x-1" ] },
+		     "slavenames" : [ "debian-jessie-s390x-1" ] },