diff --git a/libphonenumber.spec b/libphonenumber.spec
index 6308eb5..d49ad46 100644
--- a/libphonenumber.spec
+++ b/libphonenumber.spec
@@ -1,6 +1,6 @@
 Name:          libphonenumber
 Version:       8.12.39
-Release:       1mamba
+Release:       2mamba
 Summary:       Google's common Java, C++ and JavaScript library for parsing, formatting, and validating international phone numbers
 Group:         System/Libraries
 Vendor:        openmamba
@@ -17,7 +17,7 @@ BuildRequires: libicu-devel
 BuildRequires: libprotobuf-devel
 BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
-BuildRequires: libprotobuf-devel >= 3.17.0
+BuildRequires: libprotobuf-devel >= 3.19.4
 
 %description
 Google's common Java, C++ and JavaScript library for parsing, formatting, and validating international phone numbers.
@@ -69,6 +69,9 @@ This package contains libraries and header files for developing applications tha
 %doc README.md
 
 %changelog
+* Sun Feb 06 2022 Silvan Calarco <silvan.calarco@mambasoft.it> 8.12.39-2mamba
+- rbuilt with libprotobuf 3.19.4
+
 * Wed Dec 08 2021 Automatic Build System <autodist@mambasoft.it> 8.12.39-1mamba
 - automatic version update by autodist