diff --git a/docs/requirements.txt b/docs/requirements.txt
index bf915eb4..12bccab1 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,7 +1,10 @@
 pandas
 numpy
 thrift
-numpydoc
 cython
 cramjam
 fastparquet
+numpydoc
+sphynx<7
+docsutils<0.19
+sphinx_rtd_theme