diff --git a/chaos_monkey/monkey-linux.spec b/chaos_monkey/monkey-linux.spec
index 16e88810d..5ebd9779e 100644
--- a/chaos_monkey/monkey-linux.spec
+++ b/chaos_monkey/monkey-linux.spec
@@ -7,7 +7,7 @@ a = Analysis(['main.py'],
              pathex=['.'],
              binaries=None,
              datas=None,
-             hiddenimports=['_cffi_backend'],
+             hiddenimports=['_cffi_backend','grequests'],
              hookspath=None,
              runtime_hooks=None,
              excludes=None,
diff --git a/chaos_monkey/monkey.spec b/chaos_monkey/monkey.spec
index 8f3418ecb..e233d64f5 100644
--- a/chaos_monkey/monkey.spec
+++ b/chaos_monkey/monkey.spec
@@ -3,7 +3,7 @@ import os
 import platform
 a = Analysis(['main.py'],
              pathex=['.'],
-             hiddenimports=['_cffi_backend', 'queue'],
+             hiddenimports=['_cffi_backend', 'queue','grequests'],
              hookspath=None,
              runtime_hooks=None)
 
diff --git a/chaos_monkey/monkeyfs.py b/chaos_monkey/monkeyfs.py
index 5e10688bf..dabd3a7eb 100644
--- a/chaos_monkey/monkeyfs.py
+++ b/chaos_monkey/monkeyfs.py
@@ -16,7 +16,7 @@ class VirtualFile(BytesIO):
             name = MONKEYFS_PREFIX + name
         self.name = name
         self._mode = mode
-        if VirtualFile._vfs.has_key(name):
+        if name in VirtualFile._vfs:
             super(VirtualFile, self).__init__(self._vfs[name])
         else:
             super(VirtualFile, self).__init__('')
@@ -31,7 +31,8 @@ class VirtualFile(BytesIO):
 
     @staticmethod
     def isfile(path):
-        return VirtualFile._vfs.has_key(path)
+        return path in VirtualFile._vfs
+
 
 
 def getsize(path):