diff --git a/ngspice.spec b/ngspice.spec
index 6e66055..a40d4d9 100644
--- a/ngspice.spec
+++ b/ngspice.spec
@@ -1,5 +1,5 @@
 Name:          ngspice
-Version:       38
+Version:       40
 Release:       1mamba
 Summary:       Mixed-level/Mixed-signal circuit simulator based on Spice3f5, Ciber1b1, and Xspice
 Group:         Applications/Scientific
@@ -82,6 +82,9 @@ This package contains libraries and header files for developing applications tha
 %{_libdir}/pkgconfig/ngspice.pc
 
 %changelog
+* Sat Apr 01 2023 Automatic Build System <autodist@mambasoft.it> 40-1mamba
+- automatic version update by autodist
+
 * Mon Oct 31 2022 Automatic Build System <autodist@mambasoft.it> 38-1mamba
 - automatic version update by autodist