diff --git a/README.md b/README.md
index 1a67aaf..d5b3a76 100644
--- a/README.md
+++ b/README.md
@@ -755,4 +755,6 @@ The following guidelines indicate when the use of an index should be reconsidere
     ALTER TABLE table_name 
     ADD CONSTRAINT MyPrimaryKey PRIMARY KEY (column1, column2...);
     
+### DROP CONSTRAINT
 
+