diff --git a/requirements.txt b/requirements.txt
index 3cb38f5..db1274e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,13 +1,4 @@
 Adafruit-DHT==1.4.0
-cryptography==1.7.1
-idna==2.2
-keyring==10.1
-keyrings.alt==1.3
-pyasn1==0.1.9
-pycrypto==2.6.1
-pygobject==3.22.0
-python-apt==1.1.0b5
-pyxdg==0.25
-SecretStorage==2.3.1
-six==1.12.0
-virtualenv==16.4.3
+pymodbus==2.1.0
+pyserial==3.4
+six==1.11.0