diff --git a/acpica.spec b/acpica.spec
index 8f9f94e..333e480 100644
--- a/acpica.spec
+++ b/acpica.spec
@@ -1,12 +1,12 @@
 Name:          acpica
-Version:       20210331
+Version:       20210730
 Release:       1mamba
 Summary:       Advanced Configuration & Power Interface Component Architecture
 Group:         System/Kernel and Hardware
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Stefano Cotta Ramusino <stefano.cotta@openmamba.org>
-URL:           https://www.intel.com/technology/iapc/acpi/downloads.htm
+URL:           https://www.intel.com/content/www/us/en/standards/processor-vendor-specific-acpi-specification.html
 Source:        https://acpica.org/sites/acpica/files/acpica-unix-%{version}.tar.gz
 Source1:       %{name}-license
 Source2:       http://www.intel.com/technology/iapc/acpi/downloads/AslCompiler.pdf
@@ -51,6 +51,9 @@ cp %{S:2} %{S:3} .
 %doc source/LICENSE
 
 %changelog
+* Sat Jul 31 2021 Automatic Build System <autodist@mambasoft.it> 20210730-1mamba
+- automatic version update by autodist
+
 * Tue Apr 06 2021 Automatic Build System <autodist@mambasoft.it> 20210331-1mamba
 - automatic version update by autodist