diff --git a/root.spec b/root.spec
index 86fa930a902..21851b1d725 100644
--- a/root.spec
+++ b/root.spec
@@ -3,8 +3,8 @@
 ## INITENV SET ROOTSYS %{i}
 ## INCLUDE compilation_flags
 ## INCLUDE cpp-standard
-%define tag bf30166570c8e41dbfba4793b903980ef02cbde7
-%define branch cms/master/aa513463b0
+%define tag a621c5e307ab594050349dec81d847b959841825
+%define branch cms/master/655ec31de6
 
 %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