diff --git a/doc/install/postgresql_extensions.md b/doc/install/postgresql_extensions.md
index 44ed6f4c0c472955117621b04e90c252f5e593e1..8ccf27b15a6e9692d25f975649b1cc19933313dc 100644
--- a/doc/install/postgresql_extensions.md
+++ b/doc/install/postgresql_extensions.md
@@ -22,6 +22,7 @@ You must load the following extensions into the main GitLab database (defaults t
 | `pg_trgm`    | 8.6                    |
 | `btree_gist` | 13.1                   |
 | `plpgsql`    | 11.7                   |
+| `amcheck`    | 18.4                   |
 
 If you are using [GitLab Geo](../administration/geo/_index.md), you must load the following
 extensions into all secondary tracking databases (defaults to `gitlabhq_geo_production`):
@@ -58,6 +59,7 @@ To install a PostgreSQL extension, this procedure should be followed:
                                         List of installed extensions
         Name    | Version |   Schema   |                            Description
     ------------+---------+------------+-------------------------------------------------------------------
+    amcheck    | 1.3     | public     | functions for verifying relation integrity
     btree_gist | 1.5     | public     | support for indexing common datatypes in GiST
     pg_trgm    | 1.4     | public     | text similarity measurement and index searching based on trigrams
     plpgsql    | 1.0     | pg_catalog | PL/pgSQL procedural language