diff --git a/activemodel/lib/active_model/validations/comparison.rb b/activemodel/lib/active_model/validations/comparison.rb
index 80da718758..1204d19884 100644
--- a/activemodel/lib/active_model/validations/comparison.rb
+++ b/activemodel/lib/active_model/validations/comparison.rb
@@ -22,7 +22,7 @@ module ActiveModel
             return record.errors.add(attr_name, :blank, **error_options(value, option_value))
           end
 
-          unless value.send(COMPARE_CHECKS[option], option_value)
+          unless value.public_send(COMPARE_CHECKS[option], option_value)
             record.errors.add(attr_name, option, **error_options(value, option_value))
           end
         rescue ArgumentError => e
diff --git a/activemodel/lib/active_model/validations/numericality.rb b/activemodel/lib/active_model/validations/numericality.rb
index 14bb4be571..b3da205507 100644
--- a/activemodel/lib/active_model/validations/numericality.rb
+++ b/activemodel/lib/active_model/validations/numericality.rb
@@ -46,16 +46,16 @@ module ActiveModel
 
         options.slice(*RESERVED_OPTIONS).each do |option, option_value|
           if NUMBER_CHECKS.include?(option)
-            unless value.to_i.send(NUMBER_CHECKS[option])
+            unless value.to_i.public_send(NUMBER_CHECKS[option])
               record.errors.add(attr_name, option, **filtered_options(value))
             end
           elsif RANGE_CHECKS.include?(option)
-            unless value.send(RANGE_CHECKS[option], option_value)
+            unless value.public_send(RANGE_CHECKS[option], option_value)
               record.errors.add(attr_name, option, **filtered_options(value).merge!(count: option_value))
             end
           elsif COMPARE_CHECKS.include?(option)
             option_value = option_as_number(record, option_value, precision, scale)
-            unless value.send(COMPARE_CHECKS[option], option_value)
+            unless value.public_send(COMPARE_CHECKS[option], option_value)
               record.errors.add(attr_name, option, **filtered_options(value).merge!(count: option_value))
             end
           end