diff --git a/README.md b/README.md
index 5276029..ec62c88 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,8 @@ http://stackoverflow.com/questions/631783/what-is-the-use-of-having-destructor-a
 
 decorator pattern
 
+factory pattern
+
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 detect unused #include files
 http://stackoverflow.com/questions/74326/how-should-i-detect-unnecessary-include-files-in-a-large-c-project