diff --git a/master.cfg b/master.cfg
index 562d7cf..b0a91b2 100644
--- a/master.cfg
+++ b/master.cfg
@@ -43,6 +43,9 @@ import git
 #### General Configuration ####
 ###############################
 
+from twisted.protocols.basic import NetstringReceiver
+NetstringReceiver.MAX_LENGTH = 1000000
+
 # This is the dictionary that the buildmaster pays attention to. We
 # also use a shorter alias to save typing.
 c = BuildmasterConfig = {}