1 files changed, 1 insertions, 0 deletions
diff --git a/Gemfile b/Gemfile
index d7275017f..bdac00b48 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,6 +7,7 @@ gem 'pkg-config', '~> 1.3'
 
 gem 'puma', '~> 3.11'
 gem 'rails', '~> 5.2.1'
+gem 'thor', '~> 0.20'
 
 gem 'hamlit-rails', '~> 0.2'
 gem 'pg', '~> 1.0'