diff --git a/docs/http/http-metrics.md b/docs/http/http-metrics.md
index 93a393b50..e514452a4 100644
--- a/docs/http/http-metrics.md
+++ b/docs/http/http-metrics.md
@@ -514,7 +514,7 @@ of `[ 0.005, 0.01, 0.025, 0.05, 0.075, 0.1, 0.25, 0.5, 0.75, 1, 2.5, 5, 7.5, 10
 | [`network.protocol.version`](../attributes-registry/network.md) | string | Version of the protocol specified in `network.protocol.name`. [4] | `1.0`; `1.1`; `2`; `3` | Recommended |
 | [`server.address`](../general/attributes.md) | string | Host identifier of the ["URI origin"](https://www.rfc-editor.org/rfc/rfc9110.html#name-uri-origin) HTTP request is sent to. [5] | `example.com`; `10.1.2.80`; `/tmp/my.sock` | Required |
 | [`server.port`](../general/attributes.md) | int | Port identifier of the ["URI origin"](https://www.rfc-editor.org/rfc/rfc9110.html#name-uri-origin) HTTP request is sent to. [6] | `80`; `8080`; `443` | Conditionally Required: [7] |
-| [`url.scheme`](../attributes-registry/url.md) | string | The [URI scheme](https://www.rfc-editor.org/rfc/rfc3986#section-3.1) component identifying the used protocol. | `https`; `ftp`; `telnet` | Required |
+| [`url.scheme`](../attributes-registry/url.md) | string | The [URI scheme](https://www.rfc-editor.org/rfc/rfc3986#section-3.1) component identifying the used protocol. | `http`; `https` | Required |
 
 **[1]:** If the request fails with an error before response status code was sent or received,
 `error.type` SHOULD be set to exception type (its fully-qualified class name, if applicable)
@@ -610,7 +610,7 @@ This metric is optional.
 | [`network.protocol.version`](../attributes-registry/network.md) | string | Version of the protocol specified in `network.protocol.name`. [4] | `1.0`; `1.1`; `2`; `3` | Recommended |
 | [`server.address`](../general/attributes.md) | string | Host identifier of the ["URI origin"](https://www.rfc-editor.org/rfc/rfc9110.html#name-uri-origin) HTTP request is sent to. [5] | `example.com`; `10.1.2.80`; `/tmp/my.sock` | Required |
 | [`server.port`](../general/attributes.md) | int | Port identifier of the ["URI origin"](https://www.rfc-editor.org/rfc/rfc9110.html#name-uri-origin) HTTP request is sent to. [6] | `80`; `8080`; `443` | Conditionally Required: [7] |
-| [`url.scheme`](../attributes-registry/url.md) | string | The [URI scheme](https://www.rfc-editor.org/rfc/rfc3986#section-3.1) component identifying the used protocol. | `https`; `ftp`; `telnet` | Required |
+| [`url.scheme`](../attributes-registry/url.md) | string | The [URI scheme](https://www.rfc-editor.org/rfc/rfc3986#section-3.1) component identifying the used protocol. | `http`; `https` | Required |
 
 **[1]:** If the request fails with an error before response status code was sent or received,
 `error.type` SHOULD be set to exception type (its fully-qualified class name, if applicable)
@@ -706,7 +706,7 @@ This metric is optional.
 | [`network.protocol.version`](../attributes-registry/network.md) | string | Version of the protocol specified in `network.protocol.name`. [4] | `1.0`; `1.1`; `2`; `3` | Recommended |
 | [`server.address`](../general/attributes.md) | string | Host identifier of the ["URI origin"](https://www.rfc-editor.org/rfc/rfc9110.html#name-uri-origin) HTTP request is sent to. [5] | `example.com`; `10.1.2.80`; `/tmp/my.sock` | Required |
 | [`server.port`](../general/attributes.md) | int | Port identifier of the ["URI origin"](https://www.rfc-editor.org/rfc/rfc9110.html#name-uri-origin) HTTP request is sent to. [6] | `80`; `8080`; `443` | Conditionally Required: [7] |
-| [`url.scheme`](../attributes-registry/url.md) | string | The [URI scheme](https://www.rfc-editor.org/rfc/rfc3986#section-3.1) component identifying the used protocol. | `https`; `ftp`; `telnet` | Required |
+| [`url.scheme`](../attributes-registry/url.md) | string | The [URI scheme](https://www.rfc-editor.org/rfc/rfc3986#section-3.1) component identifying the used protocol. | `http`; `https` | Required |
 
 **[1]:** If the request fails with an error before response status code was sent or received,
 `error.type` SHOULD be set to exception type (its fully-qualified class name, if applicable)
diff --git a/model/metrics/http.yaml b/model/metrics/http.yaml
index a791b0f07..3a9984368 100644
--- a/model/metrics/http.yaml
+++ b/model/metrics/http.yaml
@@ -43,6 +43,7 @@ groups:
     attributes:
       - ref: url.scheme
         requirement_level: required
+        examples: ["http", "https"]
 
   - id: metric.http.server.request.duration
     type: metric