diff --git a/pyproject.toml b/pyproject.toml
index d5104d5..d6f986c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -89,7 +89,7 @@ dev-dependencies = [
     "pytest-cov >= 4.1,< 5.0",
     "coverage ~= 7.4",
     "junit2html >= 30.1,< 32.0",
-    "pyright == 1.1.383",
+    "pyright == 1.1.384",
     "isort ~= 5.13",
     "ruff ~= 0.3",
     "bandit[sarif,toml] ~= 1.7"
diff --git a/src/web/Ligare/web/config.py b/src/web/Ligare/web/config.py
index e41c2eb..1bf267d 100644
--- a/src/web/Ligare/web/config.py
+++ b/src/web/Ligare/web/config.py
@@ -1,6 +1,6 @@
 from dataclasses import field
 from os import environ
-from typing import Literal
+from typing import Literal, Sequence, cast
 
 from flask.config import Config as FlaskAppConfig
 from Ligare.programming.config import AbstractConfig
@@ -16,7 +16,7 @@ class LoggingConfig(BaseModel):
 class WebSecurityCorsConfig(BaseModel):
     origins: list[str] | None = None
     allow_credentials: bool = False
-    allow_methods: list[
+    allow_methods: Sequence[
         Literal[
             "GET",
             "POST",
@@ -28,7 +28,11 @@ class WebSecurityCorsConfig(BaseModel):
             "CONNECT",
             "TRACE",
         ]
-    ] = field(default_factory=lambda: ["GET", "POST", "OPTIONS"])
+    ] = field(
+        default_factory=lambda: cast(
+            list[Literal["GET", "POST", "OPTIONS"]], ["GET", "POST", "OPTIONS"]
+        )
+    )
     allow_headers: list[str | Literal["*"]] = field(default_factory=lambda: ["*"])