diff --git a/Gemfile b/Gemfile
index d85ade9..ff57b62 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,3 +3,4 @@ source "https://rubygems.org"
 
 gem "rdebug"
 gem "qtbindings"
+gem "thor"
diff --git a/Gemfile.lock b/Gemfile.lock
index 975df05..f6bb6cf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,6 +3,7 @@ GEM
   specs:
     qtbindings (4.8.3.0)
     rdebug (0.1)
+    thor (0.18.1)
 
 PLATFORMS
   ruby
@@ -10,3 +11,4 @@ PLATFORMS
 DEPENDENCIES
   qtbindings
   rdebug
+  thor