diff --git a/arduino.spec b/arduino.spec
index f57007f..356d60c 100644
--- a/arduino.spec
+++ b/arduino.spec
@@ -2,7 +2,7 @@
 %define        longversion  %(echo 0%version | tr -d .)
 
 Name:          arduino
-Version:       1.8.17
+Version:       1.8.18
 Release:       1mamba
 Summary:       The open-source Arduino environment
 Group:         Graphical Desktop/Applications/Development
@@ -120,6 +120,9 @@ done
 #%doc %{_defaultdocdir}/arduino-%{version}/reference
 
 %changelog
+* Thu Dec 16 2021 Automatic Build System <autodist@mambasoft.it> 1.8.18-1mamba
+- automatic version update by autodist
+
 * Wed Dec 15 2021 Automatic Build System <autodist@mambasoft.it> 1.8.17-1mamba
 - automatic version update by autodist