diff --git a/cantor.spec b/cantor.spec
index dd6ed59..703313f 100644
--- a/cantor.spec
+++ b/cantor.spec
@@ -1,6 +1,6 @@
 Name:          cantor
 Version:       18.08.0
-Release:       1mamba
+Release:       2mamba
 Summary:       KDE Frontend to Mathematical Software
 Group:         Graphical Desktop/Applications/Educational
 Vendor:        openmamba
@@ -48,8 +48,8 @@ BuildRequires: libsonnet-devel
 BuildRequires: libspectre-devel
 BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
+BuildRequires: libqalculate-devel >= 2.6.2-1mamba
 BuildRequires: cmake
-BuildRequires: libqalculate-devel >= 0.9.7
 BuildRequires: gcc >= 8.1.0
 #Requires:      kde-workspace
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
@@ -157,6 +157,9 @@ exit 0
 %doc TODO
 
 %changelog
+* Wed Aug 29 2018 Silvan Calarco <silvan.calarco@mambasoft.it> 18.08.0-2mamba
+- rebuilt by autoport with build requirements: libqalculate-devel>=2.6.2-1mamba
+
 * Sat Aug 18 2018 Automatic Build System <autodist@mambasoft.it> 18.08.0-1mamba
 - automatic version update by autodist