diff --git a/Gemfile.lock b/Gemfile.lock
index 21ea85f..6026ed3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -213,4 +213,4 @@ DEPENDENCIES
   sqlite3
 
 BUNDLED WITH
-   2.2.33
+   2.4.3
diff --git a/Rakefile b/Rakefile
index 364e110..6921aad 100644
--- a/Rakefile
+++ b/Rakefile
@@ -2,8 +2,7 @@ require 'bundler/setup'
 require 'bundler/gem_tasks'
 
 require 'bump/tasks'
-# TODO: https://github.com/gregorym/bump/issues/115
-# Bump.replace_in_default = Dir["gemfiles/*.gemfile.lock"]
+Bump.replace_in_default = Dir["gemfiles/*.gemfile.lock"]
 
 task :spec do
   sh "rspec spec"
diff --git a/gemfiles/rails52.gemfile.lock b/gemfiles/rails52.gemfile.lock
index 0c4299c..cc247bb 100644
--- a/gemfiles/rails52.gemfile.lock
+++ b/gemfiles/rails52.gemfile.lock
@@ -178,4 +178,4 @@ DEPENDENCIES
   sqlite3
 
 BUNDLED WITH
-   2.3.17
+   2.4.3
diff --git a/gemfiles/rails61.gemfile.lock b/gemfiles/rails61.gemfile.lock
index 4a055ef..b09ef92 100644
--- a/gemfiles/rails61.gemfile.lock
+++ b/gemfiles/rails61.gemfile.lock
@@ -197,4 +197,4 @@ DEPENDENCIES
   sqlite3
 
 BUNDLED WITH
-   2.3.17
+   2.4.3
diff --git a/gemfiles/rails70.gemfile.lock b/gemfiles/rails70.gemfile.lock
index 1e7d184..b57bd00 100644
--- a/gemfiles/rails70.gemfile.lock
+++ b/gemfiles/rails70.gemfile.lock
@@ -213,4 +213,4 @@ DEPENDENCIES
   sqlite3
 
 BUNDLED WITH
-   2.3.17
+   2.4.3