diff --git a/mock/c6-devtoolset-7.i386.cfg b/mock/c6-devtoolset-7.i386.cfg
index 32d3e03..101fe98 100644
--- a/mock/c6-devtoolset-7.i386.cfg
+++ b/mock/c6-devtoolset-7.i386.cfg
@@ -1,7 +1,7 @@
 config_opts['root'] = 'TARGETNAME'
 config_opts['target_arch'] = 'i686'
 config_opts['legal_host_arches'] = ('i386', 'i486', 'i586', 'i686', 'x86_64',)
-config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz scl-utils scl-utils-build  devtoolset devtoolset-build'
+config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz scl-utils scl-utils-builddevtoolset-7-build'
 config_opts['dist'] = 'el6'  # only useful for --resultdir variable subst
 config_opts['macros']['%dist'] = ".el6"
 config_opts['%centos_ver'] = "6"
diff --git a/mock/c6-devtoolset-7.x86_64.cfg b/mock/c6-devtoolset-7.x86_64.cfg
index c3d826f..8155fe7 100644
--- a/mock/c6-devtoolset-7.x86_64.cfg
+++ b/mock/c6-devtoolset-7.x86_64.cfg
@@ -1,7 +1,7 @@
 config_opts['root'] = 'TARGETNAME'
 config_opts['target_arch'] = 'x86_64'
 config_opts['legal_host_arches'] = ('x86_64','noarch',)
-config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz scl-utils scl-utils-build devtoolset devtoolset-build'
+config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz scl-utils scl-utils-build devtoolset-7-build'
 config_opts['dist'] = 'el6'  # only useful for --resultdir variable subst
 config_opts['macros']['%dist'] = ".el6"
 config_opts['%centos_ver'] = "6"