diff --git a/.ruby-version b/.ruby-version
index 097a15a..37c2961 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.6.2
+2.7.2
diff --git a/.tool-versions b/.tool-versions
index 4d524dc..9eb38ed 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1 @@
-ruby 2.6.2
+ruby 2.7.2
diff --git a/Gemfile b/Gemfile
index a9aba3e..46d61ad 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@
 # the following line to use "http://" instead
 source 'https://rubygems.org'
 
-ruby "2.6.2"
+ruby "2.7.2"
 
 gem "bourbon"
 
diff --git a/Gemfile.lock b/Gemfile.lock
index f3906ce..4214311 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -112,8 +112,9 @@ DEPENDENCIES
   bourbon
   middleman
   middleman-livereload
-  tzinfo-data
-  wdm (~> 0.1.0)
 
 RUBY VERSION
-   ruby 2.6.2
+   ruby 2.7.2p137
+
+BUNDLED WITH
+   2.2.7