diff --git a/packages/python/plotly/tox.ini b/packages/python/plotly/tox.ini
index d98beda6272..df41b7e1df1 100644
--- a/packages/python/plotly/tox.ini
+++ b/packages/python/plotly/tox.ini
@@ -74,7 +74,6 @@ deps=
     optional: pillow==5.2.0
     optional: matplotlib==2.2.3
     optional: xarray==0.10.9
-    optional: pywavelets==1.0.3
     optional: scikit-image==0.14.4
 
 ; CORE ENVIRONMENTS