diff --git a/kalk.spec b/kalk.spec
index 3f9db38..89ceaa6 100644
--- a/kalk.spec
+++ b/kalk.spec
@@ -2,7 +2,7 @@
 
 Name:          kalk
 Version:       24.05.1
-Release:       1mamba
+Release:       2mamba
 Summary:       A convergent calculator application built with the Kirigami framework
 Group:         Graphical Desktop/Applications/Scientific
 Vendor:        openmamba
@@ -24,6 +24,7 @@ BuildRequires: libstdc++6-devel
 BuildRequires: qt6-qtbase-devel
 BuildRequires: qt6-qtdeclarative-devel
 ## AUTOBUILDREQ-END
+BuildRequires: libqalculate-devel >= 0:5.2.0.1-1mamba
 BuildRequires: cmake
 BuildRequires: kf6-rpm-macros
 BuildRequires: extra-cmake-modules
@@ -58,6 +59,9 @@ A convergent calculator application built with the Kirigami framework.
 %doc LICENSES
 
 %changelog
+* Sun Jun 30 2024 Automatic Build System <autodist@mambasoft.it> 24.05.1-2mamba
+- rebuilt by autoport with build requirements: libqalculate-devel>=0:5.2.0.1-1mamba
+
 * Sat Jun 15 2024 Automatic Build System <autodist@openmamba.org> 24.05.1-1mamba
 - automatic version update by autodist