diff --git a/charts/netbox/README.md b/charts/netbox/README.md
index 357beccb..24068e3f 100644
--- a/charts/netbox/README.md
+++ b/charts/netbox/README.md
@@ -209,6 +209,7 @@ The following table lists the configurable parameters for this chart and their d
 | `externalDatabase.existingSecretName`           | Fetch password for external PostgreSQL from a different `Secret`    | `""`                                         |
 | `externalDatabase.existingSecretKey`            | Key to fetch the password in the above `Secret`                     | `postgresql-password`                        |
 | `externalDatabase.sslMode`                      | PostgreSQL client SSL Mode setting                                  | `prefer`                                     |
+| `externalDatabase.sslRootCert`                  | PostgreSQL client SSL Root Certificate setting                      | `null`                                       |
 | `externalDatabase.connMaxAge`                   | The lifetime of a database connection, as an integer of seconds     | `300`                                        |
 | `externalDatabase.disableServerSideCursors`     | Disable the use of server-side cursors transaction pooling          | `false`                                      |
 | `externalDatabase.targetSessionAttrs`           | Determines whether the session must have certain properties         | `read-write`                                 |
diff --git a/charts/netbox/templates/configmap.yaml b/charts/netbox/templates/configmap.yaml
index 074d7103..df1b2872 100644
--- a/charts/netbox/templates/configmap.yaml
+++ b/charts/netbox/templates/configmap.yaml
@@ -29,6 +29,9 @@ data:
       {{- end }}
       OPTIONS:
         sslmode: {{ .Values.externalDatabase.sslMode | quote }}
+        {{- if .Values.externalDatabase.sslRootCert }}
+        sslrootcert: {{ .Values.externalDatabase.sslRootCert | quote }}
+        {{- end}}
         target_session_attrs: {{ .Values.externalDatabase.targetSessionAttrs | default "read-write" | quote }}
       CONN_MAX_AGE: {{ .Values.externalDatabase.connMaxAge | int }}
       DISABLE_SERVER_SIDE_CURSORS: {{ toJson .Values.externalDatabase.disableServerSideCursors }}
diff --git a/charts/netbox/values.schema.json b/charts/netbox/values.schema.json
index 7f71438b..42f2ac7d 100644
--- a/charts/netbox/values.schema.json
+++ b/charts/netbox/values.schema.json
@@ -397,6 +397,9 @@
         "sslMode": {
           "type": "string"
         },
+        "sslRootCert": {
+          "type": "string"
+        },
         "targetSessionAttrs": {
           "type": "string"
         },
diff --git a/charts/netbox/values.yaml b/charts/netbox/values.yaml
index b60fc66a..76121310 100644
--- a/charts/netbox/values.yaml
+++ b/charts/netbox/values.yaml
@@ -1028,6 +1028,7 @@ externalDatabase:
 
   # The following settings also apply when using the bundled PostgreSQL chart:
   sslMode: prefer
+  sslRootCert: ""
   connMaxAge: 300
   disableServerSideCursors: false
   targetSessionAttrs: read-write