diff --git a/submodules/autoconf b/submodules/autoconf
index babc8660..66fdaea3 160000
--- a/submodules/autoconf
+++ b/submodules/autoconf
@@ -1 +1 @@
-Subproject commit babc8660d5a7561ed7e99e09aeabffaccfe06d6d
+Subproject commit 66fdaea3cfb4e758212c1891913e9a59441d49af