diff --git a/docs_src/security/tutorial004.py b/docs_src/security/tutorial004.py
index 91d161b8a..222589618 100644
--- a/docs_src/security/tutorial004.py
+++ b/docs_src/security/tutorial004.py
@@ -95,7 +95,7 @@ async def get_current_user(token: str = Depends(oauth2_scheme)):
     )
     try:
         payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
-        username: str = payload.get("sub")
+        username = payload.get("sub")
         if username is None:
             raise credentials_exception
         token_data = TokenData(username=username)
diff --git a/docs_src/security/tutorial004_an.py b/docs_src/security/tutorial004_an.py
index df50754af..e2221cd39 100644
--- a/docs_src/security/tutorial004_an.py
+++ b/docs_src/security/tutorial004_an.py
@@ -96,7 +96,7 @@ async def get_current_user(token: Annotated[str, Depends(oauth2_scheme)]):
     )
     try:
         payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
-        username: str = payload.get("sub")
+        username = payload.get("sub")
         if username is None:
             raise credentials_exception
         token_data = TokenData(username=username)
diff --git a/docs_src/security/tutorial004_an_py310.py b/docs_src/security/tutorial004_an_py310.py
index eff54ef01..a3f74fc0e 100644
--- a/docs_src/security/tutorial004_an_py310.py
+++ b/docs_src/security/tutorial004_an_py310.py
@@ -95,7 +95,7 @@ async def get_current_user(token: Annotated[str, Depends(oauth2_scheme)]):
     )
     try:
         payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
-        username: str = payload.get("sub")
+        username = payload.get("sub")
         if username is None:
             raise credentials_exception
         token_data = TokenData(username=username)
diff --git a/docs_src/security/tutorial004_an_py39.py b/docs_src/security/tutorial004_an_py39.py
index 0455b500c..b33d677ed 100644
--- a/docs_src/security/tutorial004_an_py39.py
+++ b/docs_src/security/tutorial004_an_py39.py
@@ -95,7 +95,7 @@ async def get_current_user(token: Annotated[str, Depends(oauth2_scheme)]):
     )
     try:
         payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
-        username: str = payload.get("sub")
+        username = payload.get("sub")
         if username is None:
             raise credentials_exception
         token_data = TokenData(username=username)
diff --git a/docs_src/security/tutorial004_py310.py b/docs_src/security/tutorial004_py310.py
index 78bee22a3..d46ce26bf 100644
--- a/docs_src/security/tutorial004_py310.py
+++ b/docs_src/security/tutorial004_py310.py
@@ -94,7 +94,7 @@ async def get_current_user(token: str = Depends(oauth2_scheme)):
     )
     try:
         payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
-        username: str = payload.get("sub")
+        username = payload.get("sub")
         if username is None:
             raise credentials_exception
         token_data = TokenData(username=username)
diff --git a/docs_src/security/tutorial005_an.py b/docs_src/security/tutorial005_an.py
index 5b67cb145..2e8bb3bdb 100644
--- a/docs_src/security/tutorial005_an.py
+++ b/docs_src/security/tutorial005_an.py
@@ -117,7 +117,7 @@ async def get_current_user(
     )
     try:
         payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
-        username: str = payload.get("sub")
+        username = payload.get("sub")
         if username is None:
             raise credentials_exception
         token_scopes = payload.get("scopes", [])
diff --git a/docs_src/security/tutorial005_an_py310.py b/docs_src/security/tutorial005_an_py310.py
index 297193e35..90781587f 100644
--- a/docs_src/security/tutorial005_an_py310.py
+++ b/docs_src/security/tutorial005_an_py310.py
@@ -116,7 +116,7 @@ async def get_current_user(
     )
     try:
         payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
-        username: str = payload.get("sub")
+        username = payload.get("sub")
         if username is None:
             raise credentials_exception
         token_scopes = payload.get("scopes", [])
diff --git a/docs_src/security/tutorial005_an_py39.py b/docs_src/security/tutorial005_an_py39.py
index 1acf47bdc..a5192d8d6 100644
--- a/docs_src/security/tutorial005_an_py39.py
+++ b/docs_src/security/tutorial005_an_py39.py
@@ -1,5 +1,5 @@
 from datetime import datetime, timedelta, timezone
-from typing import Annotated, List, Union
+from typing import Annotated, Union
 
 import jwt
 from fastapi import Depends, FastAPI, HTTPException, Security, status
@@ -44,7 +44,7 @@ class Token(BaseModel):
 
 class TokenData(BaseModel):
     username: Union[str, None] = None
-    scopes: List[str] = []
+    scopes: list[str] = []
 
 
 class User(BaseModel):
@@ -116,7 +116,7 @@ async def get_current_user(
     )
     try:
         payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
-        username: str = payload.get("sub")
+        username = payload.get("sub")
         if username is None:
             raise credentials_exception
         token_scopes = payload.get("scopes", [])