diff --git a/cpanfile b/cpanfile
index 6f43bf4cbb..b7bddb85aa 100644
--- a/cpanfile
+++ b/cpanfile
@@ -92,6 +92,7 @@ requires 'PDF::Table', 'v0.9.3';
 requires 'POSIX', '1.09';
 requires 'Plack::Middleware::LogWarn', '0.001002';
 requires 'Plack::Middleware::ReverseProxy', '0.14';
+requires 'Readonly', '2.00';
 requires 'Schedule::At', '1.06';
 requires 'Search::Elasticsearch', '5.01';
 requires 'Sereal::Decoder', '3.0';
@@ -158,8 +159,6 @@ recommends 'Net::Server', '0.97';
 recommends 'Net::Z3950::SimpleServer', '1.15';
 recommends 'PDF::FromHTML', '0.31';
 recommends 'Parallel::ForkManager', '0.75';
-recommends 'Readonly', '0.01';
-recommends 'Readonly::XS', '0.01';
 recommends 'SMS::Send', '0.05';
 recommends 'Selenium::Remote::Driver', '1.27';
 recommends 'Sys::CPU', '0.52';