diff --git a/sbin/testEnvironment.pl b/sbin/testEnvironment.pl
index 99f9515e8..3c97f08ac 100755
--- a/sbin/testEnvironment.pl
+++ b/sbin/testEnvironment.pl
@@ -186,6 +186,7 @@ checkModule('common::sense',                '3.2'        );
 checkModule('Geo::Coder::Googlev3',         '0.07'       );
 checkModule('IO::File::WithPath',                        );
 checkModule('Plack::Middleware::SizeLimit',              );
+checkModule('Devel::Size',                  '0.78'       );
 
 failAndExit("Required modules are missing, running no more checks.") if $missingModule;