diff --git a/src/openai/_constants.py b/src/openai/_constants.py
index 3f82bed037..7029dc72b0 100644
--- a/src/openai/_constants.py
+++ b/src/openai/_constants.py
@@ -6,7 +6,7 @@
 OVERRIDE_CAST_TO_HEADER = "____stainless_override_cast_to"
 
 # default timeout is 10 minutes
-DEFAULT_TIMEOUT = httpx.Timeout(timeout=600.0, connect=5.0)
+DEFAULT_TIMEOUT = httpx.Timeout(timeout=600, connect=5.0)
 DEFAULT_MAX_RETRIES = 2
 DEFAULT_CONNECTION_LIMITS = httpx.Limits(max_connections=1000, max_keepalive_connections=100)