diff --git a/Gemfile b/Gemfile
index 012f7f2..cb25fc2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,8 +9,14 @@ gem 'speedtest'
 gem 'sinatra'
 gem 'sinatra-activerecord'
 gem 'chartkick'
-gem 'rerun'
 gem 'sqlite3'
 gem 'rake'
-gem 'puma'gem 'whenever', require: false
+gem 'whenever', require: false
 
+group :development do
+  gem 'rerun'
+end
+
+group :production do
+  gem 'puma'
+end
diff --git a/Gemfile.lock b/Gemfile.lock
index 85ecd7f..65f84e2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,6 +13,7 @@ GEM
       tzinfo (~> 2.0)
       zeitwerk (~> 2.3)
     chartkick (4.0.5)
+    chronic (0.10.2)
     concurrent-ruby (1.1.9)
     ffi (1.15.4)
     httparty (0.20.0)
@@ -57,6 +58,8 @@ GEM
     tilt (2.0.10)
     tzinfo (2.0.4)
       concurrent-ruby (~> 1.0)
+    whenever (1.0.0)
+      chronic (>= 0.6.3)
     zeitwerk (2.4.2)
 
 PLATFORMS
@@ -72,6 +75,7 @@ DEPENDENCIES
   sinatra-activerecord
   speedtest
   sqlite3
+  whenever
 
 BUNDLED WITH
    2.1.4