diff --git a/requirements.txt b/requirements.txt
index 71d953e..cdd9c95 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1 @@
-asn1crypto==0.24.0
-cffi==1.11.5
-cryptography==2.3.1
-idna==2.7
 paramiko==2.0.8
-pyasn1==0.4.4
-pycparser==2.19
-six==1.11.0