diff --git a/lib/cluster.js b/lib/cluster.js
index b5e7e8a..4f83ba2 100644
--- a/lib/cluster.js
+++ b/lib/cluster.js
@@ -131,7 +131,8 @@ function start(service) {
 process.on("uncaughtException", function(err) {
   logger.error({
     message: "Uncaught exception in master process, exiting",
-    exception: err
+    exception: err,
+    pid: process.pid
   });
   cluster.removeListener("exit", restartWorker);
   for (let pid in cluster.workers)
diff --git a/lib/server.coffee b/lib/server.coffee
index 5b8ba11..535e157 100644
--- a/lib/server.coffee
+++ b/lib/server.coffee
@@ -66,7 +66,8 @@ exit = () ->
 process.on('uncaughtException', (err) ->
   logger.error({
     message: 'Uncaught exception'
-    exception: err
+    exception: err,
+    pid: process.pid
   })
   exit()
 )