diff --git a/plasma-workspace.spec b/plasma-workspace.spec
index a094aff..e76c5ef 100644
--- a/plasma-workspace.spec
+++ b/plasma-workspace.spec
@@ -2,7 +2,7 @@
 
 Name:          plasma-workspace
 Version:       5.13.4
-Release:       1mamba
+Release:       2mamba
 Summary:       KDE Frameworks 5 Workspace
 Group:         Graphical Desktop/Applications/Environment
 Vendor:        openmamba
@@ -54,6 +54,7 @@ BuildRequires: libsolid-devel
 BuildRequires: libsonnet-devel
 BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
+BuildRequires: libqalculate-devel >= 2.6.2-1mamba
 BuildRequires: libkscreen-devel >= 5.6.1-1mamba
 BuildRequires: cmake
 BuildRequires: rpm-macros-kde5
@@ -302,6 +303,9 @@ exit 0
 %{_libdir}/cmake/LibColorCorrect/LibColorCorrect*.cmake
 
 %changelog
+* Wed Aug 29 2018 Silvan Calarco <silvan.calarco@mambasoft.it> 5.13.4-2mamba
+- rebuilt by autoport with build requirements: libqalculate-devel>=2.6.2-1mamba
+
 * Fri Aug 03 2018 Automatic Build System <autodist@mambasoft.it> 5.13.4-1mamba
 - automatic version update by autodist