diff --git a/Gemfile b/Gemfile
index 5ff15ea..1b13e77 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,4 +11,4 @@ gem "terminal-table", "~> 3.0"
 
 gem "parallel", "~> 1.22"
 
-gem "thor", "~> 1.2"
+gem "thor", "~> 1.4"
diff --git a/Gemfile.lock b/Gemfile.lock
index bcb9d71..7e72b96 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -5,7 +5,7 @@ GEM
     parallel (1.22.1)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
-    thor (1.2.1)
+    thor (1.4.0)
     unicode-display_width (2.3.0)
 
 PLATFORMS
@@ -16,7 +16,7 @@ DEPENDENCIES
   hashie (~> 5.0)
   parallel (~> 1.22)
   terminal-table (~> 3.0)
-  thor (~> 1.2)
+  thor (~> 1.4)
 
 BUNDLED WITH
    2.3.17