diff --git a/test/acceptance/support/isolated_environment.rb b/test/acceptance/support/isolated_environment.rb
index 2ac1afded..98a95cee8 100644
--- a/test/acceptance/support/isolated_environment.rb
+++ b/test/acceptance/support/isolated_environment.rb
@@ -1,6 +1,5 @@
 require "fileutils"
 require "pathname"
-require "tempfile"
 
 require "log4r"
 require "childprocess"