diff --git a/qrcodegen.spec b/qrcodegen.spec
index a69e62e..2802163 100644
--- a/qrcodegen.spec
+++ b/qrcodegen.spec
@@ -1,6 +1,6 @@
 Name:          qrcodegen
-Version:       1.5.0
-Release:       2mamba
+Version:       1.6.0
+Release:       1mamba
 Summary:       High-quality QR Code generator library in Java, TypeScript/JavaScript, Python, C++, C, Rust
 Group:         System/Libraries
 Vendor:        openmamba
@@ -28,8 +28,8 @@ This package contains libraries and header files for developing applications tha
 %setup -q -n QR-Code-generator-%{version}
 
 %build
-%make -C c
-%make -C cpp
+%make -C c CFLAGS="%{optflags} -fPIC"
+%make -C cpp CXXFLAGS="%{optflags} -fPIC"
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
@@ -51,6 +51,9 @@ cp -a cpp/*.hpp %{buildroot}%{_includedir}/qrcodegen/
 %{_libdir}/libqrcodegen.a
 
 %changelog
+* Sat Apr 18 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 1.6.0-1mamba
+- update to 1.6.0
+
 * Thu Feb 06 2020 Silvan Calarco <silvan.calarco@mambasoft.it> 1.5.0-2mamba
 - rename libqrcodegen.a to libqrcodegencpp.a and provide libqrcodegen.a as C library