diff --git a/docs/en/docs/release-notes.md b/docs/en/docs/release-notes.md
index e2d1514c7..bbcbc74b7 100644
--- a/docs/en/docs/release-notes.md
+++ b/docs/en/docs/release-notes.md
@@ -7,6 +7,11 @@ hide:
 
 ## Latest Changes
 
+### Refactors
+
+* ♻️ Refactor internals of dependencies, simplify code and remove `get_param_sub_dependant`. PR [#14255](https://github.com/fastapi/fastapi/pull/14255) by [@tiangolo](https://github.com/tiangolo).
+* ♻️ Refactor internals of dependencies, simplify using dataclasses. PR [#14254](https://github.com/fastapi/fastapi/pull/14254) by [@tiangolo](https://github.com/tiangolo).
+
 ## 0.120.2
 
 ### Fixes
diff --git a/fastapi/dependencies/utils.py b/fastapi/dependencies/utils.py
index 72b86860f..e31dab4be 100644
--- a/fastapi/dependencies/utils.py
+++ b/fastapi/dependencies/utils.py
@@ -130,14 +130,11 @@ def get_parameterless_sub_dependant(*, depends: params.Depends, path: str) -> De
     assert callable(depends.dependency), (
         "A parameter-less dependency must have a callable dependency"
     )
-    use_security_scopes = []
+    use_security_scopes: List[str] = []
     if isinstance(depends, params.Security) and depends.scopes:
         use_security_scopes.extend(depends.scopes)
     return get_dependant(
-        path=path,
-        call=depends.dependency,
-        security_scopes=use_security_scopes,
-        scope=depends.scope,
+        path=path, call=depends.dependency, security_scopes=use_security_scopes
     )
 
 
diff --git a/tests/test_dependency_paramless.py b/tests/test_dependency_paramless.py
new file mode 100644
index 000000000..9c3cc3878
--- /dev/null
+++ b/tests/test_dependency_paramless.py
@@ -0,0 +1,78 @@
+from typing import Union
+
+from fastapi import FastAPI, HTTPException, Security
+from fastapi.security import (
+    OAuth2PasswordBearer,
+    SecurityScopes,
+)
+from fastapi.testclient import TestClient
+from typing_extensions import Annotated
+
+app = FastAPI()
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="token")
+
+
+def process_auth(
+    credentials: Annotated[Union[str, None], Security(oauth2_scheme)],
+    security_scopes: SecurityScopes,
+):
+    # This is an incorrect way of using it, this is not checking if the scopes are
+    # provided by the token, only if the endpoint is requesting them, but the test
+    # here is just to check if FastAPI is indeed registering and passing the scopes
+    # correctly when using Security with parameterless dependencies.
+    if "a" not in security_scopes.scopes or "b" not in security_scopes.scopes:
+        raise HTTPException(detail="a or b not in scopes", status_code=401)
+    return {"token": credentials, "scopes": security_scopes.scopes}
+
+
+@app.get("/get-credentials")
+def get_credentials(
+    credentials: Annotated[dict, Security(process_auth, scopes=["a", "b"])],
+):
+    return credentials
+
+
+@app.get(
+    "/parameterless-with-scopes",
+    dependencies=[Security(process_auth, scopes=["a", "b"])],
+)
+def get_parameterless_with_scopes():
+    return {"status": "ok"}
+
+
+@app.get(
+    "/parameterless-without-scopes",
+    dependencies=[Security(process_auth)],
+)
+def get_parameterless_without_scopes():
+    return {"status": "ok"}
+
+
+client = TestClient(app)
+
+
+def test_get_credentials():
+    response = client.get("/get-credentials", headers={"authorization": "Bearer token"})
+    assert response.status_code == 200, response.text
+    assert response.json() == {"token": "token", "scopes": ["a", "b"]}
+
+
+def test_parameterless_with_scopes():
+    response = client.get(
+        "/parameterless-with-scopes", headers={"authorization": "Bearer token"}
+    )
+    assert response.status_code == 200, response.text
+    assert response.json() == {"status": "ok"}
+
+
+def test_parameterless_without_scopes():
+    response = client.get(
+        "/parameterless-without-scopes", headers={"authorization": "Bearer token"}
+    )
+    assert response.status_code == 401, response.text
+    assert response.json() == {"detail": "a or b not in scopes"}
+
+
+def test_call_get_parameterless_without_scopes_for_coverage():
+    assert get_parameterless_without_scopes() == {"status": "ok"}