diff --git a/submodules/bctoolbox b/submodules/bctoolbox
index 5e72dc476..6974ec34f 160000
--- a/submodules/bctoolbox
+++ b/submodules/bctoolbox
@@ -1 +1 @@
-Subproject commit 5e72dc47659fc127b41aa06e7a3ae6a8d4861162
+Subproject commit 6974ec34fe938524310f132c3e9f6d42670c2ebe