diff --git a/.travis.yml b/.travis.yml
index 4a43a987..04fca451 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 ---
-before_install: gem install bundler:1.17.3
+before_install: gem install bundler:2.1.4
 
 rvm:
   - 2.3
diff --git a/lib/appraisal/command.rb b/lib/appraisal/command.rb
index 5ba7f794..26619e50 100644
--- a/lib/appraisal/command.rb
+++ b/lib/appraisal/command.rb
@@ -41,9 +41,9 @@ def with_clean_env
     end
 
     def ensure_bundler_is_available
-      unless system %(gem list -q "^bundler$" | grep -q bundler)
+      version = Utils.bundler_version
+      unless system %(gem list -i bundler -v #{version})
         puts ">> Reinstall Bundler into #{ENV["GEM_HOME"]}"
-        version = Utils.bundler_version
 
         unless system "gem install bundler --version #{version}"
           puts