diff --git a/brozzler/worker.py b/brozzler/worker.py
index 0f1e72b..a6586bf 100644
--- a/brozzler/worker.py
+++ b/brozzler/worker.py
@@ -488,7 +488,7 @@ class BrozzlerWorker:
             url = page.url
 
         if proxy_url:
-            http = urllib3.ProxyManager("https://%s" % proxy_url, cert_reqs="CERT_NONE")
+            http = urllib3.ProxyManager("http://%s" % proxy_url, cert_reqs="CERT_NONE")
         else:
             http = urllib3.PoolManager()