diff --git a/libopenjpeg.spec b/libopenjpeg.spec
index 843c6f7..a1c7907 100644
--- a/libopenjpeg.spec
+++ b/libopenjpeg.spec
@@ -3,7 +3,7 @@
 %define apiver %(echo %version | cut -d. -f1-2)
 Name:          libopenjpeg
 Version:       2.1.0
-Release:       1mamba
+Release:       2mamba
 Summary:       An open-source JPEG 2000 codec written in C language
 Group:         System/Libraries
 Vendor:        openmamba
@@ -29,6 +29,7 @@ An open-source JPEG 2000 codec written in C language.
 Summary:       Static libraries and header for %{name}
 Group:         Development/Libraries
 Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
+Requires:      %{name}-tools = %{?epoch:%epoch:}%{version}-%{release}
 
 %description -n %{name}-devel
 An open-source JPEG 2000 codec written in C language.
@@ -88,6 +89,9 @@ This package contains utility applications for %{name}.
 #%{_mandir}/man3/libopenjp2.3*
 
 %changelog
+* Sun Aug 18 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 2.1.0-2mamba
+- libopenjpeg-devel: require libopenjpeg-tools
+
 * Thu Jul 10 2014 Silvan Calarco <silvan.calarco@mambasoft.it> 2.1.0-1mamba
 - update to 2.1.0