--- a/printrun-src/requirements.txt	Tue Jan 19 20:44:16 2021 +0100
+++ b/printrun-src/requirements.txt	Tue Jan 19 20:45:09 2021 +0100
@@ -1,9 +1,13 @@
-argparse
-pyreadline
-pyserial
-wxPython
-numpy
-pyglet>=1.1
-pycairo
-cairosvg
-psutil>=2.0
+pyserial (>= 3.0)
+wxPython (== 4.1.0)
+numpy (>= 1.8.2)
+pyglet (>= 1.1)
+cffi
+cairocffi
+cairosvg (>= 1.0.9)
+psutil (>= 2.1)
+lxml (>= 2.9.1)
+appdirs (>= 1.4.0)
+dbus-python >= 1.2.0 ; sys_platform == 'linux'
+pyobjc-framework-Cocoa ; sys_platform == 'darwin'
+pyreadline ; sys_platform == 'win32'