diff --git a/colddb.lua b/colddb.lua
index f3f198d..7aaba5a 100644
--- a/colddb.lua
+++ b/colddb.lua
@@ -79,6 +79,11 @@ function colddb.Colddb(dir)
 	self.get_serializer = function()
 		return serializer, deserializer
 	end
+
+	self.set_serializer = function(coder, decoder)
+		serializer = coder
+		deserializer = decoder
+	end
 	
 	local function file_exists(name)
 		local f = io.open(string.format("%s/%s.cold", directory, name), "r")