diff --git a/SwiftWebSocket.podspec b/SwiftWebSocket.podspec
index 4db304c..a599866 100644
--- a/SwiftWebSocket.podspec
+++ b/SwiftWebSocket.podspec
@@ -13,4 +13,6 @@ Pod::Spec.new do |s|
   s.source_files           = "Source/*.swift"
   s.requires_arc           = true
   s.libraries              = 'z'
+  s.static_framework       = true
+  s.swift_version          = '4.0'
 end