diff --git a/protobuf.spec b/protobuf.spec
index c8dffbe..d3989eb 100644
--- a/protobuf.spec
+++ b/protobuf.spec
@@ -1,12 +1,12 @@
 Name:          protobuf
-Version:       3.17.0
-Release:       2mamba
+Version:       3.17.1
+Release:       1mamba
 Summary:       A way of encoding structured data in an efficient yet extensible format
 Group:         Development/Tools
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           https://github.com/google/protobuf
+URL:           https://github.com/protocolbuffers/protobuf
 Source:        https://github.com/google/protobuf.git/v%{version}/protobuf-%{version}.tar.bz2
 License:       BSD
 ## AUTOBUILDREQ-BEGIN
@@ -114,6 +114,9 @@ sed -i "\,\.egg-info/,d;s,.*/man/.*,&.gz," %{name}.filelist
 %{python3_sitearch}/protobuf-%{version}-py*.egg-info/*
 
 %changelog
+* Tue May 25 2021 Automatic Build System <autodist@mambasoft.it> 3.17.1-1mamba
+- automatic version update by autodist
+
 * Sat May 15 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 3.17.0-2mamba
 - libprotobuf-devel: require protobuf; python-protobuf: use distdeps; fixed url