diff --git a/supabase_functions/_async/functions_client.py b/supabase_functions/_async/functions_client.py
index c1fd033..9705774 100644
--- a/supabase_functions/_async/functions_client.py
+++ b/supabase_functions/_async/functions_client.py
@@ -8,7 +8,14 @@
 
 
 class AsyncFunctionsClient:
-    def __init__(self, url: str, headers: Dict, timeout: int, verify: bool = True):
+    def __init__(
+        self,
+        url: str,
+        headers: Dict,
+        timeout: int,
+        verify: bool = True,
+        proxy: Optional[str] = None,
+    ):
         self.url = url
         self.headers = {
             "User-Agent": f"supabase-py/functions-py v{__version__}",
@@ -19,6 +26,7 @@ def __init__(self, url: str, headers: Dict, timeout: int, verify: bool = True):
             headers=self.headers,
             verify=bool(verify),
             timeout=timeout,
+            proxy=proxy,
             follow_redirects=True,
             http2=True,
         )
diff --git a/supabase_functions/_sync/functions_client.py b/supabase_functions/_sync/functions_client.py
index edccd25..372d864 100644
--- a/supabase_functions/_sync/functions_client.py
+++ b/supabase_functions/_sync/functions_client.py
@@ -8,7 +8,14 @@
 
 
 class SyncFunctionsClient:
-    def __init__(self, url: str, headers: Dict, timeout: int, verify: bool = True):
+    def __init__(
+        self,
+        url: str,
+        headers: Dict,
+        timeout: int,
+        verify: bool = True,
+        proxy: Optional[str] = None,
+    ):
         self.url = url
         self.headers = {
             "User-Agent": f"supabase-py/functions-py v{__version__}",
@@ -19,6 +26,7 @@ def __init__(self, url: str, headers: Dict, timeout: int, verify: bool = True):
             headers=self.headers,
             verify=bool(verify),
             timeout=timeout,
+            proxy=proxy,
             follow_redirects=True,
             http2=True,
         )