diff --git a/README.md b/README.md
index 85e8155..296e50d 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,12 @@ To install `pg_ivm`, execute this in the module's directory:
 make install USE_PGXS=1
 ```
 
+And, execute CREATE EXTENSION comand.
+
+```
+CREATE EXTENSION pg_ivm;
+```
+
 > **Important:** Don't forget to set the `PG_CONFIG` variable (`make PG_CONFIG=...`) in case you want to test `pg_ivm` on a non-default or custom build of PostgreSQL. Read more [here](https://wiki.postgresql.org/wiki/Building_and_Installing_PostgreSQL_Extension_Modules).
 
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