diff --git a/scripts/alphanet_version b/scripts/alphanet_version
index 695096176..66e7e307b 100644
--- a/scripts/alphanet_version
+++ b/scripts/alphanet_version
@@ -1 +1 @@
-2017-08-10
+2017-08-17
diff --git a/src/node/shell/distributed_db_message.ml b/src/node/shell/distributed_db_message.ml
index 306ba3d8d..91ec4e034 100644
--- a/src/node/shell/distributed_db_message.ml
+++ b/src/node/shell/distributed_db_message.ml
@@ -174,7 +174,7 @@ let versions =
   let open P2p.Version in
   [ { name = "TEZOS" ;
       major = 0 ;
-      minor = 20 ;
+      minor = 21 ;
     }
   ]