diff --git a/3rdparty/spdlog b/3rdparty/spdlog
index 64ed6b4..c3aed4b 160000
--- a/3rdparty/spdlog
+++ b/3rdparty/spdlog
@@ -1 +1 @@
-Subproject commit 64ed6b495c910e0a47d9357618f25dccb7d1af6e
+Subproject commit c3aed4b68373955e1cc94307683d44dca1515d2b
diff --git a/makespec/BUILDVERSION b/makespec/BUILDVERSION
index f1aaa90..9183bf0 100644
--- a/makespec/BUILDVERSION
+++ b/makespec/BUILDVERSION
@@ -1 +1 @@
-254
+256