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-rw-r--r--activerecord/lib/active_record/base.rb5
1 files changed, 5 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index 47dc2d4a3a..00324b14f2 100644
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -1,3 +1,8 @@
+begin
+ require 'psych'
+rescue LoadError
+end
+
require 'yaml'
require 'set'
require 'active_support/benchmarkable'