diff --git a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb
index e5ad08b6b02332ed287e7e0b26e52398fb861a6f..19fa8502d3185fdf7310779f9f77241d86577f23 100644
--- a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb
@@ -595,7 +595,11 @@ def sqlite_version
 
         def translate_exception(exception, message)
           case exception.message
-          when /column(s)? .* (is|are) not unique/
+          # SQLite 3.8.2 returns a newly formatted error message:
+          #   UNIQUE constraint failed: *table_name*.*column_name*
+          # Older versions of SQLite return:
+          #   column *column_name* is not unique
+          when /column(s)? .* (is|are) not unique/, /UNIQUE constraint failed: .*/
             RecordNotUnique.new(message, exception)
           else
             super