diff --git a/README.md b/README.md
index 1e813a3..274519b 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ This Github action installs PostgreSQL on the GitHub actions runner and verifies
 
 |                                         INPUT                                          |  TYPE  | REQUIRED | DEFAULT |          DESCRIPTION          |
 |----------------------------------------------------------------------------------------|--------|----------|---------|-------------------------------|
-| <a name="input_postgresql_version"></a>[postgresql\_version](#input_postgresql_version) | string |   true   |         | Version of PostgreSQL. e.g 15 |
+| <a name="input_postgresql-version"></a>[postgresql-version](#input_postgresql-version) | string |   true   |         | Version of PostgreSQL. e.g 15 |
 
 <!-- AUTO-DOC-INPUT:END -->