diff --git a/doc/requirements.txt b/doc/requirements.txt
index d2c9575..6195c60 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,8 +1,2 @@
 xarray
-sphinx
 sphinx_rtd_theme
-pyyaml
-netCDF4
-numpy
-cftime
-natsort