lib/carrierwave/base64/base64_string_io.rb in carrierwave-base64-1.5 vs lib/carrierwave/base64/base64_string_io.rb in carrierwave-base64-1.6

@@ -21,10 +21,10 @@
       end
 
       private
 
       def get_file_format(description)
-        regex = /([a-z]+);base64\z/
+        regex = /([a-z0-9]+);base64\z/
         regex.match(description).try(:[], 1)
       end
     end
   end
 end