diff --git a/src/delta_barth/_management.py b/src/delta_barth/_management.py
index ae2bbc4..628fd3a 100644
--- a/src/delta_barth/_management.py
+++ b/src/delta_barth/_management.py
@@ -1,6 +1,6 @@
 from typing import Final
 
-from delta_barth.api.common import Session
+from delta_barth.api._session import Session
 from delta_barth.constants import HTTP_BASE_CONTENT_HEADERS
 from delta_barth.errors import StateHandler
 
diff --git a/src/delta_barth/api/_session.py b/src/delta_barth/api/_session.py
new file mode 100644
index 0000000..27ac6b1
--- /dev/null
+++ b/src/delta_barth/api/_session.py
@@ -0,0 +1,48 @@
+from __future__ import annotations
+
+import warnings
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from delta_barth.types import HttpContentHeaders
+
+
+class Session:
+    def __init__(
+        self,
+        base_headers: HttpContentHeaders,
+    ) -> None:
+        self._headers = base_headers
+        self._session_token: str | None = None
+        self._logged_in: bool = False
+
+    @property
+    def headers(self) -> HttpContentHeaders:
+        return self._headers
+
+    @property
+    def session_token(self) -> str | None:
+        return self._session_token
+
+    @property
+    def logged_in(self) -> bool:
+        return self._logged_in
+
+    def add_session_token(
+        self,
+        token: str,
+    ) -> None:
+        if self.session_token is not None:
+            warnings.warn(
+                "Setting new API session token despite it was already set. "
+                "Overwriting existing token."
+            )
+        self._session_token = token
+        self._headers.update(DelecoToken=token)
+        self._logged_in = True
+
+    def remove_session_token(self) -> None:
+        if "DelecoToken" in self.headers:
+            del self._headers["DelecoToken"]
+            self._session_token = None
+            self._logged_in = False
diff --git a/src/delta_barth/api/common.py b/src/delta_barth/api/common.py
index ccc3130..6f35be8 100644
--- a/src/delta_barth/api/common.py
+++ b/src/delta_barth/api/common.py
@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 import re
-import warnings
 from datetime import datetime as Datetime
 from typing import TYPE_CHECKING, Final
 
@@ -14,7 +13,7 @@ from delta_barth.errors import (
     ApiConnectionError,
     UnspecifiedRequestType,
 )
-from delta_barth.types import DelBarApiError, HttpContentHeaders, HttpRequestTypes
+from delta_barth.types import DelBarApiError, HttpRequestTypes
 
 if TYPE_CHECKING:
     from delta_barth.types import Status
@@ -22,47 +21,6 @@ if TYPE_CHECKING:
 LOGIN_ERROR_CODES_KNOWN: Final[frozenset[int]] = frozenset((400, 401, 409, 500))
 
 
-class Session:
-    def __init__(
-        self,
-        base_headers: HttpContentHeaders,
-    ) -> None:
-        self._headers = base_headers
-        self._session_token: str | None = None
-        self._logged_in: bool = False
-
-    @property
-    def headers(self) -> HttpContentHeaders:
-        return self._headers
-
-    @property
-    def session_token(self) -> str | None:
-        return self._session_token
-
-    @property
-    def logged_in(self) -> bool:
-        return self._logged_in
-
-    def add_session_token(
-        self,
-        token: str,
-    ) -> None:
-        if self.session_token is not None:
-            warnings.warn(
-                "Setting new API session token despite it was already set. "
-                "Overwriting existing token."
-            )
-        self._session_token = token
-        self._headers.update(DelecoToken=token)
-        self._logged_in = True
-
-    def remove_session_token(self) -> None:
-        if "DelecoToken" in self.headers:
-            del self._headers["DelecoToken"]
-            self._session_token = None
-            self._logged_in = False
-
-
 def _assert_login_status() -> None:
     if not CURRENT_SESSION.logged_in:
         raise ApiConnectionError("Curent session is not logged in")