diff --git a/requirements.txt b/requirements.txt
index 37a62760..7c437139 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,13 +1,13 @@
-numpy
+numpy==1.14.3
 lws
 torch>=0.4.0
-librosa
-inflect
-unidecode
+librosa==0.5.1
+inflect==0.2.5
+Unidecode==0.4.20
 tensorboard
 tensorboardX
-matplotlib
+matplotlib==2.0.2
 Pillow
 flask
-scipy
+scipy==0.19.0
 lws
\ No newline at end of file