diff --git a/setup.py b/setup.py
index 4eeb13d..6eca329 100755
--- a/setup.py
+++ b/setup.py
@@ -51,7 +51,7 @@ except:
 
 setuptools.setup(
         name='warcprox',
-        version='2.0b2.dev28',
+        version='2.0b2.dev29',
         description='WARC writing MITM HTTP/S proxy',
         url='https://github.com/internetarchive/warcprox',
         author='Noah Levitt',
diff --git a/warcprox/main.py b/warcprox/main.py
index 18a316e..a127016 100644
--- a/warcprox/main.py
+++ b/warcprox/main.py
@@ -41,6 +41,7 @@ import certauth.certauth
 import warcprox
 import re
 import rethinkstuff
+import cryptography.hazmat.backends.openssl
 
 def _build_arg_parser(prog=os.path.basename(sys.argv[0])):
     arg_parser = argparse.ArgumentParser(prog=prog,
@@ -213,6 +214,9 @@ def init_controller(args):
     return controller
 
 def real_main(args):
+    # see https://github.com/pyca/cryptography/issues/2911
+    cryptography.hazmat.backends.openssl.backend.activate_builtin_random()
+
     controller = init_controller(args)
 
     signal.signal(signal.SIGTERM, lambda a,b: controller.stop.set())