diff --git a/requirements.txt b/requirements.txt
index c47fb0c..69a8589 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,4 @@ argparse
 dnspython
 requests
 certifi
+billiard
\ No newline at end of file
diff --git a/subbrute/subbrute.py b/subbrute/subbrute.py
index c7b1ab6..0e60fdc 100644
--- a/subbrute/subbrute.py
+++ b/subbrute/subbrute.py
@@ -26,8 +26,7 @@ try:
 except:
     import Queue
 
-#The 'multiprocessing' library does not rely upon a Global Interpreter Lock (GIL)
-import multiprocessing
+import billiard as multiprocessing
 
 #Microsoft compatiablity
 if  sys.platform.startswith('win'):
diff --git a/sublist3r.py b/sublist3r.py
index 58fce41..4f91146 100755
--- a/sublist3r.py
+++ b/sublist3r.py
@@ -12,7 +12,7 @@ import argparse
 import time
 import hashlib
 import random
-import multiprocessing
+import billiard as multiprocessing
 import threading
 import socket
 import json
@@ -645,7 +645,9 @@ class DNSdumpster(enumratorBaseThreaded):
     def get_csrftoken(self, resp):
         csrf_regex = re.compile('<input type="hidden" name="csrfmiddlewaretoken" value="(.*?)">', re.S)
         token = csrf_regex.findall(resp)[0]
-        return token.strip()
+        if len(token) == 0:
+            return None
+        return token[0].strip()
 
     def enumerate(self):
         self.lock = threading.BoundedSemaphore(value=70)