diff --git a/spec/support/yaml_alias_load_as_unsafe_load.rb b/spec/support/yaml_alias_load_as_unsafe_load.rb
new file mode 100644
index 000000000..fbd7514d9
--- /dev/null
+++ b/spec/support/yaml_alias_load_as_unsafe_load.rb
@@ -0,0 +1,4 @@
+if Psych::VERSION >= "4.0"
+  require 'yaml'
+  YAML.singleton_class.alias_method :load, :unsafe_load
+end