diff --git a/libs/boost_matheval b/libs/boost_matheval
index 6e77515ec71..9ac5c4bd6f4 160000
--- a/libs/boost_matheval
+++ b/libs/boost_matheval
@@ -1 +1 @@
-Subproject commit 6e77515ec71ce95fe24b8ced6170fa146e9912ac
+Subproject commit 9ac5c4bd6f432e39c4b86161b1e89ad8709a5c0a