diff --git a/build_tools b/build_tools
index a08743c..8b40c47 160000
--- a/build_tools
+++ b/build_tools
@@ -1 +1 @@
-Subproject commit a08743c52acf26dce1d9676a3a0fb3abd81cd29a
+Subproject commit 8b40c477f7036a35c2918e3931e0110f7d3da5c0