diff --git a/examples/lightpush_publisher_mix.nim b/examples/lightpush_publisher_mix.nim
index 6afc2a265..31a887199 100644
--- a/examples/lightpush_publisher_mix.nim
+++ b/examples/lightpush_publisher_mix.nim
@@ -161,8 +161,7 @@ proc setupAndPublish(rng: ref HmacDrbgContext, conf: LPMixConf) {.async.} =
       Morbi accumsan elementum ligula ut fringilla. Praesent in ex metus. Phasellus urna est, tempus sit amet elementum vitae, sollicitudin vel ipsum. Fusce hendrerit eleifend dignissim. Maecenas tempor dapibus dui quis laoreet. Cras tincidunt sed ipsum sed pellentesque. Proin ut tellus nec ipsum varius interdum. Curabitur id velit ligula. Etiam sapien nulla, cursus sodales orci eu, porta lobortis nunc. Nunc at dapibus velit. Nulla et nunc vehicula, condimentum erat quis, elementum dolor. Quisque eu metus fermentum, vestibulum tellus at, sollicitudin odio. Ut vel neque justo.
       Praesent porta porta velit, vel porttitor sem. Donec sagittis at nulla venenatis iaculis. Nullam vel eleifend felis. Nullam a pellentesque lectus. Aliquam tincidunt semper dui sed bibendum. Donec hendrerit, urna et cursus dictum, neque neque convallis magna, id condimentum sem urna quis massa. Fusce non quam vulputate, fermentum mauris at, malesuada ipsum. Mauris id pellentesque libero. Donec vel erat ullamcorper, dapibus quam id, imperdiet urna. Praesent sed ligula ut est pellentesque pharetra quis et diam. Ut placerat lorem eget mi fermentum aliquet.
       This is message #""" &
-      $i &
-      """ sent from a publisher using mix.Testing larger message transmission over the Waku network is important for understanding performance characteristics under various conditions. End of transmission."""
+      $i & """ sent from a publisher using mix. End of transmission."""
     let message = WakuMessage(
       payload: toBytes(text), # content of the message
       contentTopic: LightpushContentTopic, # content topic to publish to
diff --git a/vendor/mix b/vendor/mix
index be0ed0de3..9c74e4a35 160000
--- a/vendor/mix
+++ b/vendor/mix
@@ -1 +1 @@
-Subproject commit be0ed0de37d71945075fd6c16537510e8fbc8a65
+Subproject commit 9c74e4a356c7cd0bf45be13c20702a8dd15edc04
diff --git a/waku/node/waku_node.nim b/waku/node/waku_node.nim
index 740e61ec4..1189ec72c 100644
--- a/waku/node/waku_node.nim
+++ b/waku/node/waku_node.nim
@@ -28,7 +28,8 @@ import
   mix/mix_node,
   mix/mix_protocol,
   mix/curve25519,
-  mix/protocol
+  mix/protocol,
+  mix/mix_metrics
 
 import
   ../waku_core,
@@ -308,7 +309,7 @@ proc populateMixNodePool*(node: WakuNode) {.async.} =
     let mixNodePubInfo =
       createMixPubInfo(maddrWithPeerId.value, intoCurve25519Key(peerMixPubKey))
     mixNodes[remotePeers[i].peerId] = mixNodePubInfo
-
+  mix_pool_size.set(len(mixNodes))
   # set the mix node pool
   node.mix.setNodePool(mixNodes)
   trace "mix node pool updated", poolSize = node.mix.getNodePoolSize()