bitcoin-ruby.gemspec in bitcoin-ruby-0.0.18 vs bitcoin-ruby.gemspec in bitcoin-ruby-0.0.19

@@ -17,8 +17,11 @@
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   s.require_paths = ["lib"]
 
-  s.required_rubygems_version = ">= 1.3.6"
-  #s.add_development_dependency "bacon"
+  s.required_rubygems_version = ">= 2.6.13"
+
+  s.add_runtime_dependency 'ffi'
+  s.add_runtime_dependency 'scrypt' # required by Litecoin
+  s.add_runtime_dependency 'eventmachine' # required for connection code
 end