diff --git a/adafruit_httpserver.py b/adafruit_httpserver.py
index a3fc764..a1b522d 100644
--- a/adafruit_httpserver.py
+++ b/adafruit_httpserver.py
@@ -342,6 +342,7 @@ def poll(self):
         try:
             conn, _ = self._sock.accept()
             with conn:
+                conn.setblocking(True)
                 length, _ = conn.recvfrom_into(self._buffer)
 
                 request = _HTTPRequest(raw_request=self._buffer[:length])