diff --git a/av.gemspec b/av.gemspec
index fb10d58..3f25397 100644
--- a/av.gemspec
+++ b/av.gemspec
@@ -23,5 +23,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "rspec", "~> 3.0.0"
   spec.add_development_dependency "coveralls"
 
-  spec.add_dependency "cocaine", "~> 0.5.3"
+  spec.add_dependency "terrapin", ">= 1.1.1"
 end
diff --git a/lib/av.rb b/lib/av.rb
index 9c8593a..537602e 100644
--- a/lib/av.rb
+++ b/lib/av.rb
@@ -5,7 +5,7 @@
 require "av/param_hash"
 require "av/commands/ffmpeg"
 require "av/commands/avconv"
-require "cocaine"
+require "terrapin"
 require "av/engine" if defined?(Rails)
 
 module Av
@@ -27,8 +27,8 @@ def cli(options = {})
   def run line, codes = [0]
     ::Av.log("Running command: #{line}")
     begin
-      Cocaine::CommandLine.new(line, "", expected_outcodes: codes).run
-    rescue Cocaine::ExitStatusError => e
+      Terrapin::CommandLine.new(line, "", expected_outcodes: codes).run
+    rescue Terrapin::ExitStatusError => e
       raise Av::CommandError, "error while running command #{line}: #{e}"
     end
   end