diff --git a/docs/cugraph/source/conf.py b/docs/cugraph/source/conf.py
index 02c69f0a5d7..9833c1bd8b4 100644
--- a/docs/cugraph/source/conf.py
+++ b/docs/cugraph/source/conf.py
@@ -90,7 +90,7 @@
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = 'en'
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.