diff --git a/Makefile.PL b/Makefile.PL
index e2d1561c9d..f325069cca 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -43,6 +43,7 @@ test_requires  'HTTP::Server::Simple::Authen' => undef;
 test_requires  'IO::Capture::Stderr'          => undef;
 test_requires  'IPC::Run'                     => undef;
 test_requires  'Test::Exception'              => undef;
+test_requires  'Test::MockModule'             => undef;
 test_requires  'Test::More'                   => '0.93'; # subtest
 test_requires  'YAML'                         => undef;