diff --git a/lib/process.js b/lib/process.js
index b96af5111..3a8cab8f7 100644
--- a/lib/process.js
+++ b/lib/process.js
@@ -48,7 +48,7 @@ ProcessInfo.buildProcessTree = function (infos) {
       throw new Error(`Invalid entry in processinfo index: ${id}`)
     }
     const idx = index.processes[id]
-    node.nodes = idx.children.map(id => infos[id])
+    node.nodes = idx.children.map(id => infos[id]).sort((a, b) => a.time - b.time)
     if (!node.parent) {
       treeRoot.nodes.push(node)
     }