diff --git a/koala.gemspec b/koala.gemspec
index 2f4c7beb..aa4ced0b 100644
--- a/koala.gemspec
+++ b/koala.gemspec
@@ -23,7 +23,7 @@ Gem::Specification.new do |gem|
 
   gem.required_ruby_version = '>= 2.1'
 
-  gem.add_runtime_dependency("faraday")
+  gem.add_runtime_dependency("faraday", "< 2")
   gem.add_runtime_dependency("addressable")
   gem.add_runtime_dependency("json", ">= 1.8")
 end