diff --git a/Box2D.spec b/Box2D.spec
index 262a9ba..3cfb3e6 100644
--- a/Box2D.spec
+++ b/Box2D.spec
@@ -1,7 +1,7 @@
 %global __cmake_in_source_build 1
 Name: Box2D
 Version:  2.4.1
-Release:  2%{?dist}
+Release:  5%{?dist}
 Summary: A 2D Physics Engine for Games
 
 License: zlib
@@ -9,7 +9,7 @@ URL: http://box2d.org/
 Source0: https://github.com/erincatto/box2d/archive/v%{version}/%{name}-%{version}.tar.gz
 BuildRequires:  gcc
 BuildRequires:  gcc-c++
-BuildRequires: cmake libXi-devel glew-devel glfw-devel
+BuildRequires: cmake
 BuildRequires: make
 
 %package devel
@@ -32,14 +32,14 @@ These are the development files.
 
 %prep
 %setup -qn box2d-%{version}
-rm -rf glew glfw
+rm -r extern
 
 %build
-%cmake -DBOX2D_INSTALL=ON -DBOX2D_BUILD_SHARED=ON .
-make
+%cmake -DBOX2D_INSTALL=ON -DBOX2D_BUILD_SHARED=ON -DBOX2D_BUILD_TESTBED=OFF -DBOX2D_BUILD_UNIT_TESTS=OFF .
+%cmake_build
 
 %install
-make install DESTDIR=%{buildroot}
+%make_install
 
 %ldconfig_scriptlets
 
@@ -54,6 +54,17 @@ make install DESTDIR=%{buildroot}
 %{_libdir}/cmake/box2d/*.cmake
 
 %changelog
+* Wed Feb 17 2021 Caolán McNamara <caolanm@redhat.com> - 2.4.1-5
+- disable building BOX2D_BUILD_UNIT_TESTS due to "SIGSTKSZ ... no
+  longer constant on Linux ... redefined to sysconf(_SC_SIGSTKSZ)"
+  https://github.com/bminor/glibc/blob/master/NEWS causing build failure
+
+* Wed Feb 17 2021 Caolán McNamara <caolanm@redhat.com> - 2.4.1-4
+- reduce unnecessary dependencies
+
+* Wed Feb 10 2021 Timm Bäder <tbaeder@redhat.com> - 2.4.1-3
+- Use make macros
+
 * Mon Jan 25 2021 Fedora Release Engineering <releng@fedoraproject.org> - 2.4.1-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild