diff --git a/src/hg.js b/src/hg.js
index 40bbc3b..a90c7d5 100644
--- a/src/hg.js
+++ b/src/hg.js
@@ -6,7 +6,6 @@ import request from "request-json";
 import parse from "peoplestring-parse";
 
 const HG_HOST = "https://hg.mozilla.org/";
-const HG_REPO = "projects/nss";
 
 async function jsonRequest(url) {
   let client = request.createClient(HG_HOST);
@@ -22,10 +21,10 @@ async function jsonRequest(url) {
   });
 }
 
-async function shortenRevision(revision) {
+async function shortenRevision(revision, repo) {
   async function tryShortenedRevisionHash(length) {
     let shortened = revision.slice(0, length);
-    let json = jsonRequest(HG_REPO + "/json-pushes?changeset=" + shortened);
+    let json = jsonRequest(repo + "/json-pushes?changeset=" + shortened);
 
     if (typeof(json) == "object") {
       return shortened;
@@ -37,8 +36,8 @@ async function shortenRevision(revision) {
   return tryShortenedRevisionHash(12);
 };
 
-async function fetchChangesets(revision) {
-  let json = await jsonRequest(HG_REPO + "/json-pushes?full&changeset=" + revision);
+async function fetchChangesets(revision, repo) {
+  let json = await jsonRequest(repo + "/json-pushes?full&changeset=" + revision);
 
   let id = Object.keys(json)[0];
   let changesets = json[id].changesets;
@@ -47,8 +46,8 @@ async function fetchChangesets(revision) {
     changeset.author = parse(changeset.author);
     changeset.desc = changeset.desc.split("\n")[0];
 
-    let short_rev = await shortenRevision(changeset.node);
-    changeset.href = HG_HOST + HG_REPO + "/rev/" + short_rev;
+    let short_rev = await shortenRevision(changeset.node, repo);
+    changeset.href = HG_HOST + repo + "/rev/" + short_rev;
   }
 
   return changesets;
diff --git a/src/index.js b/src/index.js
index d4ff8eb..29bcf85 100644
--- a/src/index.js
+++ b/src/index.js
@@ -47,27 +47,17 @@ function parseRevision(routes) {
   return matches[1];
 }
 
-tcc.onTaskDefined(async function (msg) {
-  let revision = parseRevision(msg.routes);
-  if (!revision) {
-    return;
-  }
+tcc.onRevisionPushed(async function (msg) {
+  let {heads} = msg.payload.payload;
 
-  let taskId = msg.payload.status.taskId;
-  let task = await tcc.fetchTask(taskId);
-  let th = task.extra.treeherder;
+  for (let head of heads) {
+    let changesets = await hg.fetchChangesets(head, msg.routingKey);
 
-  // Check for decision tasks.
-  if (th.symbol != "D") {
-    return;
-  }
-
-  let level = colors.blue("push");
-  let changesets = await hg.fetchChangesets(revision);
-
-  for (let changeset of changesets) {
-    let branch = changeset.branch == "default" ? "" : colors.gray(` ${changeset.branch}`);
-    irc.say(`[${level}${branch}] ${changeset.href} — ${changeset.author.name} — ${changeset.desc}`);
+    for (let changeset of changesets) {
+      let level = colors.blue("push");
+      let branch = changeset.branch == "default" ? "" : colors.gray(` ${changeset.branch}`);
+      irc.say(`[${level}${branch}] ${changeset.href} — ${changeset.author.name} — ${changeset.desc}`);
+    }
   }
 });
 
@@ -98,7 +88,7 @@ tcc.onTaskFailed(async function (msg) {
   let platform = PLATFORMS[th.build.platform] || th.build.platform;
 
   // Fetch changesets.
-  let changesets = await hg.fetchChangesets(revision);
+  let changesets = await hg.fetchChangesets(revision, "projects/nss");
   let authors = changesets.map(changeset => changeset.author);
   let url = TASK_INSPECTOR_URL + taskId;
   let level = colors.red("failure");
diff --git a/src/tcc.js b/src/tcc.js
index f5996d9..d7cf80d 100644
--- a/src/tcc.js
+++ b/src/tcc.js
@@ -4,26 +4,37 @@
 
 import taskcluster from "taskcluster-client";
 
+const HG_EXCHANGE = "exchange/hgpushes/v1";
+
 let queueEvents = new taskcluster.QueueEvents();
 let queue = new taskcluster.Queue();
 
-function onTaskDefined(callback) {
-  onTaskEvent("taskDefined", callback);
-}
-
-function onTaskFailed(callback) {
-  onTaskEvent("taskFailed", callback);
-}
-
-function onTaskEvent(type, callback) {
-  let listener = new taskcluster.PulseListener({
+function createListener() {
+  return new taskcluster.PulseListener({
     credentials: {
       username: process.env.PG_USERNAME,
       password: process.env.PG_PASSWORD
     }
   });
+}
 
-  listener.bind(queueEvents[type]({
+function onRevisionPushed(callback) {
+  let listener = createListener();
+
+  listener.bind({exchange: HG_EXCHANGE, routingKeyPattern: "projects/nspr"});
+  listener.bind({exchange: HG_EXCHANGE, routingKeyPattern: "projects/nss"});
+
+  listener.on("message", callback);
+
+  listener.connect().then(() => {
+    return listener.resume();
+  });
+}
+
+function onTaskFailed(callback) {
+  let listener = createListener();
+
+  listener.bind(queueEvents.taskFailed({
     provisionerId: "aws-provisioner-v1",
     workerType: "hg-worker"
   }));
@@ -39,6 +50,6 @@ async function fetchTask(taskId) {
   return queue.task(taskId);
 }
 
-module.exports.onTaskDefined = onTaskDefined;
+module.exports.onRevisionPushed = onRevisionPushed;
 module.exports.onTaskFailed = onTaskFailed;
 module.exports.fetchTask = fetchTask;