diff --git a/kalzium.spec b/kalzium.spec
index 1370a45..b106f00 100644
--- a/kalzium.spec
+++ b/kalzium.spec
@@ -1,6 +1,6 @@
 Name:          kalzium
 Version:       24.02.2
-Release:       1mamba
+Release:       2mamba
 Summary:       Periodic table of elements
 Group:         Graphical Desktop/Applications/Educational
 Vendor:        openmamba
@@ -40,11 +40,8 @@ BuildRequires: qt6-qtsvg-devel
 BuildRequires: libopenbabel-devel >= 3.1.1-3mamba
 BuildRequires: cmake
 BuildRequires: ocaml
-BuildRequires: avogadro-devel
 Provides:      kalzium4 = %{?epoch:%epoch:}%{version}-%{release}
 Obsoletes:     kalzium4 < 21.04.0
-Requires:      avogadro
-Requires:      python-boost
 
 %description
 Kalzium is an application which will show you some information about the periodic system of the elements.
@@ -129,6 +126,9 @@ exit 0
 %{_kf6_libdir}/libscience.so
 
 %changelog
+* Wed May 15 2024 Silvan Calarco <silvan.calarco@mambasoft.it> 24.02.2-2mamba
+- removed obsolete requirement for avogadro
+
 * Sat Apr 13 2024 Automatic Build System <autodist@openmamba.org> 24.02.2-1mamba
 - automatic version update by autodist