diff --git i/requirements.txt w/requirements.txt
index 556122ad..11fd49d5 100644
--- i/requirements.txt
+++ w/requirements.txt
@@ -1,11 +1,10 @@
-argparse==1.4.0
-colour==0.1.5
-numpy==1.15.0
-Pillow==5.2.0
-progressbar==2.5
-scipy==1.1.0
-tqdm==4.24.0
-opencv-python==3.4.2.17
-pycairo==1.17.1; sys_platform == 'linux'
-pycairo>=1.18.0; sys_platform == 'win32'
-pydub==0.23.0
+colour
+numpy
+Pillow
+progressbar
+scipy
+tqdm
+pycairo
+pycairo>=1.18.1; sys_platform == 'win32'
+pydub
+pyreadline==2.1; sys_platform == 'win32'