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-rw-r--r--activemodel/test/cases/helper.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activemodel/test/cases/helper.rb b/activemodel/test/cases/helper.rb
index a81584bbad..a32f11484a 100644
--- a/activemodel/test/cases/helper.rb
+++ b/activemodel/test/cases/helper.rb
@@ -6,6 +6,7 @@ $:.unshift(lib) unless $:.include?('lib') || $:.include?(lib)
require 'config'
require 'active_model'
require 'active_support/core_ext/string/access'
+require 'active_support/core_ext/hash/except'
# Show backtraces for deprecated behavior for quicker cleanup.
ActiveSupport::Deprecation.debug = true