diff --git a/Makefile.PL b/Makefile.PL
index d03e5fc..f00a3ad 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -23,9 +23,13 @@
     'Mojolicious::Plugin::Util::RandomString' => 0.08,
     'Mojolicious::Plugin::CHI' => 0.20,
     'Mojolicious::Plugin::ClientIP' => 0.01,
-    'Cache::FastMmap' => 0,
+    'Cache::FastMmap' => 1.47,
+    'Data::Serializer' => 0.60,
     'Mojo::JWT' => 0.05,
 
+    # Required for Data::Serializer at the moment
+    'JSON' => 4.02,
+
     # Required for bundled plugins
     'Mojolicious::Plugin::Piwik' => 0.26,