diff --git a/cozepy/request.py b/cozepy/request.py
index 04a4329..224e254 100644
--- a/cozepy/request.py
+++ b/cozepy/request.py
@@ -4,10 +4,10 @@
     Optional,
     Union,
     List,
-    get_origin,
     get_args,
     Iterator,
 )
+from typing_extensions import get_origin  # compatibility with python 3.7
 
 import httpx
 from httpx import Response
diff --git a/poetry.lock b/poetry.lock
index 61b3369..7a0877a 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -771,4 +771,4 @@ testing = ["big-O", "flake8 (<5)", "jaraco.functools", "jaraco.itertools", "more
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.7"
-content-hash = "94e4a43332c76c62d6c6e68782964fe35384ca513857c7106d621b58cd8e720e"
+content-hash = "d858b9316108a6fcf2e65e3abe8ed0d9766b258747f51a6e337c9b2860008828"
diff --git a/pyproject.toml b/pyproject.toml
index 26bc64f..9fa3d82 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,6 +10,7 @@ python = "^3.7"
 pydantic = "^2.5.0"
 authlib = "^1.2.0"
 httpx = "^0.24.0"
+typing-extensions = "^4.3.0"
 
 [tool.poetry.group.dev.dependencies]
 pytest = "^7.0.0"