diff --git a/monetico_paiement.gemspec b/monetico_paiement.gemspec
index 9f3d7ea..463b318 100644
--- a/monetico_paiement.gemspec
+++ b/monetico_paiement.gemspec
@@ -12,7 +12,7 @@ Gem::Specification.new do |spec|
   spec.description   = "Monetico Paiement is a gem to ease credit card payment with the Monetico Paiement bank system."
   spec.homepage      = "https://code.amnesix.eu/guillaume/monetico_paiement"
   spec.license       = "MIT"
-  spec.required_ruby_version = ">= 2.4.0"
+  spec.required_ruby_version = ">= 2.3.0"
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage