diff --git a/kalzium.spec b/kalzium.spec
index 77d0a5a..3861259 100644
--- a/kalzium.spec
+++ b/kalzium.spec
@@ -1,5 +1,5 @@
 Name:          kalzium
-Version:       21.04.2
+Version:       21.04.3
 Release:       1mamba
 Summary:       Periodic table of elements
 Group:         Graphical Desktop/Applications/Educational
@@ -31,6 +31,7 @@ BuildRequires: libkwindowsystem-devel
 BuildRequires: libkxmlgui-devel
 BuildRequires: libopenbabel-devel
 BuildRequires: libqt5-devel
+BuildRequires: libsolid-devel
 BuildRequires: libsonnet-devel
 BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
@@ -127,6 +128,9 @@ exit 0
 %{_kde5_libdir}/libscience.so
 
 %changelog
+* Thu Jul 08 2021 Automatic Build System <autodist@mambasoft.it> 21.04.3-1mamba
+- automatic version update by autodist
+
 * Thu Jun 10 2021 Automatic Build System <autodist@mambasoft.it> 21.04.2-1mamba
 - automatic version update by autodist