diff --git a/src/functions_framework/_http/gunicorn.py b/src/functions_framework/_http/gunicorn.py
index 009a06b7..050f766c 100644
--- a/src/functions_framework/_http/gunicorn.py
+++ b/src/functions_framework/_http/gunicorn.py
@@ -21,9 +21,9 @@ class GunicornApplication(gunicorn.app.base.BaseApplication):
     def __init__(self, app, host, port, debug, **options):
         self.options = {
             "bind": "%s:%s" % (host, port),
-            "workers": os.environ.get("WORKERS", (os.cpu_count() or 1) * 4),
-            "threads": os.environ.get("THREADS", 1),
-            "timeout": os.environ.get("CLOUD_RUN_TIMEOUT_SECONDS", 300),
+            "workers": os.environ.get("WORKERS", 1),
+            "threads": os.environ.get("THREADS", (os.cpu_count() or 1) * 4),
+            "timeout": os.environ.get("CLOUD_RUN_TIMEOUT_SECONDS", 0),
             "loglevel": "error",
             "limit_request_line": 0,
         }
diff --git a/tests/test_http.py b/tests/test_http.py
index 0a46fbea..fbfac9d2 100644
--- a/tests/test_http.py
+++ b/tests/test_http.py
@@ -97,17 +97,17 @@ def test_gunicorn_application(debug):
     assert gunicorn_app.app == app
     assert gunicorn_app.options == {
         "bind": "%s:%s" % (host, port),
-        "workers": os.cpu_count() * 4,
-        "threads": 1,
-        "timeout": 300,
+        "workers": 1,
+        "threads": os.cpu_count() * 4,
+        "timeout": 0,
         "loglevel": "error",
         "limit_request_line": 0,
     }
 
     assert gunicorn_app.cfg.bind == ["1.2.3.4:1234"]
-    assert gunicorn_app.cfg.workers == os.cpu_count() * 4
-    assert gunicorn_app.cfg.threads == 1
-    assert gunicorn_app.cfg.timeout == 300
+    assert gunicorn_app.cfg.workers == 1
+    assert gunicorn_app.cfg.threads == os.cpu_count() * 4
+    assert gunicorn_app.cfg.timeout == 0
     assert gunicorn_app.load() == app