diff --git a/RxCodyFire.podspec b/RxCodyFire.podspec
index 41981fe..4874dba 100644
--- a/RxCodyFire.podspec
+++ b/RxCodyFire.podspec
@@ -39,4 +39,6 @@ Pod::Spec.new do |s|
   s.dependency 'CodyFire'
   s.dependency 'RxSwift', '~> 4.3.1'
   s.dependency 'RxCocoa', '~> 4.3.1'
+
+  s.swift_version = '4.1.2'
 end