diff --git a/config.nims b/config.nims
index 03c918af12..c27f347cca 100644
--- a/config.nims
+++ b/config.nims
@@ -37,7 +37,8 @@ else:
   # don't link libraries we're not actually using
   switch("passL", "-Wl,-as-needed")
 
---define:chronicles_line_numbers # useful when debugging
+--define:chronicles_line_numbers # useful when debugging=
+switch("define", "chronicles_timestamps=RfcUtcTime")
 
 # The compiler doth protest too much, methinks, about all these cases where it can't
 # do its (N)RVO pass: https://github.com/nim-lang/RFCs/issues/230
diff --git a/vendor/nim-chronicles b/vendor/nim-chronicles
index 33761a5f77..1ac2715bbb 160000
--- a/vendor/nim-chronicles
+++ b/vendor/nim-chronicles
@@ -1 +1 @@
-Subproject commit 33761a5f77610d3f87f774244490eae43a9ac5a1
+Subproject commit 1ac2715bbbb1f2931ce2d32fe05b70f8d47fe413