diff --git a/spec/bundler/multilock_spec.rb b/spec/bundler/multilock_spec.rb
index 5013b67..ee1061f 100644
--- a/spec/bundler/multilock_spec.rb
+++ b/spec/bundler/multilock_spec.rb
@@ -36,7 +36,7 @@
 
         source "https://rubygems.org"
 
-        plugin "bundler-multilock", "~> 1.1"
+        plugin "bundler-multilock", "~> 1.2"
         return unless Plugin.installed?("bundler-multilock")
 
         Plugin.send(:load_plugin, "bundler-multilock")
@@ -52,7 +52,7 @@
 
       source 'https://rubygems.org'
 
-      plugin 'bundler-multilock', '~> 1.1'
+      plugin 'bundler-multilock', '~> 1.2'
       return unless Plugin.installed?('bundler-multilock')
 
       Plugin.send(:load_plugin, 'bundler-multilock')
@@ -81,7 +81,7 @@
       RUBY
 
       File.write("injected.rb", <<~RUBY)
-        plugin "bundler-multilock", "~> 1.1", path: #{File.expand_path("../..", __dir__).inspect}
+        plugin "bundler-multilock", "~> 1.2", path: #{File.expand_path("../..", __dir__).inspect}
         return unless Plugin.installed?("bundler-multilock")
 
         Plugin.send(:load_plugin, "bundler-multilock")
@@ -789,7 +789,7 @@ def write_gemfile(content)
     File.write("Gemfile", <<~RUBY)
       source "https://rubygems.org"
 
-      plugin "bundler-multilock", "~> 1.1", path: #{File.expand_path("../..", __dir__).inspect}
+      plugin "bundler-multilock", "~> 1.2", path: #{File.expand_path("../..", __dir__).inspect}
       return unless Plugin.installed?("bundler-multilock")
 
       Plugin.send(:load_plugin, "bundler-multilock")