diff --git a/doc/source/conf.py b/doc/source/conf.py
index 6d094a1..fe26400 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -82,7 +82,7 @@ bug_tag = ''
 #
 # 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 = None
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used:
diff --git a/releasenotes/source/conf.py b/releasenotes/source/conf.py
index af9113c..7be580d 100644
--- a/releasenotes/source/conf.py
+++ b/releasenotes/source/conf.py
@@ -82,7 +82,7 @@ bug_tag = ''
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
-language = None
+# language = None
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used: