diff --git a/acpica.spec b/acpica.spec
index c0a909c..67458bc 100644
--- a/acpica.spec
+++ b/acpica.spec
@@ -1,5 +1,5 @@
 Name:          acpica
-Version:       20210930
+Version:       20211217
 Release:       1mamba
 Summary:       Advanced Configuration & Power Interface Component Architecture
 Group:         System/Kernel and Hardware
@@ -15,7 +15,6 @@ Patch0:        %{name}-20061109-makefile.patch
 Patch1:        %{name}-20061109-iasl_manpage.patch
 License:       Intel Software License Agreement
 ## AUTOBUILDREQ-BEGIN
-#librt.so.1()(64bit): /usr/lib64/librt.so: file not owned by any package
 BuildRequires: glibc-devel
 ## AUTOBUILDREQ-END
 BuildRequires: flex
@@ -52,6 +51,9 @@ cp %{S:2} %{S:3} .
 %doc source/LICENSE
 
 %changelog
+* Sun Dec 19 2021 Automatic Build System <autodist@mambasoft.it> 20211217-1mamba
+- automatic version update by autodist
+
 * Fri Oct 01 2021 Automatic Build System <autodist@mambasoft.it> 20210930-1mamba
 - automatic version update by autodist