diff --git a/cpanfile b/cpanfile
index 47131bc..5138ed5 100644
--- a/cpanfile
+++ b/cpanfile
@@ -8,9 +8,9 @@ requires "Data::Printer" => "0";
 requires "Exporter" => "0";
 requires "Exporter::Easy" => "0";
 requires "List::Util" => "1.63";
-requires "Math::BigInt" => "2.003003";
-recommends "Math::BigInt::GMP" => "1.7001";
-requires "Math::BigRat" => "2.003003";
+requires "Math::BigInt" => "1.999837";
+requires "Math::BigInt::GMP" => "1.6005";
+requires "Math::BigRat" => "0.2624";
 requires "Mojo::Template" => "0";
 requires "Moose" => "0";
 requires "Moose::Role" => "0";