diff --git a/tests/codex/utils/asyncprofiler/testserialization.nim b/tests/codex/utils/asyncprofiler/testserialization.nim
index 330bf61c..607e1dd8 100644
--- a/tests/codex/utils/asyncprofiler/testserialization.nim
+++ b/tests/codex/utils/asyncprofiler/testserialization.nim
@@ -23,6 +23,7 @@ checksuite "asyncprofiler metrics serializer":
     childrenExecTime: 10.seconds,
     execTimeMax: 1500.milliseconds,
     zombieEventCount: 0,
+    stillbornCount: 0,
     callCount: 10
   )
 
@@ -33,6 +34,7 @@ checksuite "asyncprofiler metrics serializer":
       "childrenExecTime": 10000000000,
       "execTimeMax": 1500000000,
       "zombieEventCount": 0,
+      "stillbornCount": 0,
       "callCount": 10
     }
 
@@ -59,6 +61,7 @@ checksuite "asyncprofiler metrics serializer":
       "childrenExecTime": 10000000000,
       "execTimeMax": 1500000000,
       "zombieEventCount": 0,
+      "stillbornCount": 0,
       "callCount": 10
     }]
 
@@ -75,6 +78,7 @@ checksuite "asyncprofiler metrics serializer":
       execTimeMax: 1500.milliseconds,
       childrenExecTime: 1.seconds,
       zombieEventCount: 0,
+      stillbornCount: 0,
       callCount: 5
     )
 
diff --git a/vendor/nim-chronos b/vendor/nim-chronos
index 9883d7dd..7474c523 160000
--- a/vendor/nim-chronos
+++ b/vendor/nim-chronos
@@ -1 +1 @@
-Subproject commit 9883d7dd8aea76858a06a2c368debb391e11a70b
+Subproject commit 7474c5238d5eeb5f19b1eabfbbd366db959861f5