diff --git a/Procfile b/Procfile
index 8be52c5..657c54b 100644
--- a/Procfile
+++ b/Procfile
@@ -1 +1 @@
-web: gunicorn httpbin:app -b "0.0.0.0:$PORT" -w 16  -t 3 --name httpbin
\ No newline at end of file
+web: gunicorn httpbin:app -b "0.0.0.0:$PORT" -w 16 eventlet -t 3 --name httpbin
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 940cb75..1270594 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ argparse==1.2.1
 blinker==1.2
 decorator==3.3.2
 distribute==0.6.15
-gevent==0.13.6
+eventlet==0.9.16
 greenlet==0.3.1
 gunicorn==0.13.4
 newrelic==1.2.1.265