diff --git a/docs/conf.py b/docs/conf.py
index 1691ed8..4bdfdda 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -284,7 +284,3 @@ texinfo_documents = [
 
 # If true, do not generate a @detailmenu in the "Top" node's menu.
 #texinfo_no_detailmenu = False
-
-# sphinx-contrib configurations
-inline_highlight_respect_highlight = True
-inline_highlight_literals = True
diff --git a/docs/requirements.txt b/docs/requirements.txt
deleted file mode 100644
index efd165b..0000000
--- a/docs/requirements.txt
+++ /dev/null
@@ -1 +0,0 @@
-sphinxcontrib-inlinesyntaxhighlight==0.2