diff --git a/root.spec b/root.spec
index 7d37635b21d..ab3c6caf476 100644
--- a/root.spec
+++ b/root.spec
@@ -2,7 +2,7 @@
 ## INITENV +PATH PYTHON27PATH %{i}/lib
 ## INITENV +PATH PYTHON3PATH %{i}/lib
 ## INITENV SET ROOTSYS %{i}
-%define tag 989d72ff9d8878ee5eb893c0b41c3c811f1848e5
+%define tag 4ae64ea43c3274198f1658b6c6c95e11f8bfb1b5
 %define branch cms/v6-12-00-patches/38e3810
 %define github_user cms-sw
 Source: git+https://github.com/%{github_user}/root.git?obj=%{branch}/%{tag}&export=%{n}-%{realversion}&output=/%{n}-%{realversion}-%{tag}.tgz