diff --git a/docs/cudf/source/conf.py b/docs/cudf/source/conf.py
index b68d7b5849f..bd01cdcd4d8 100644
--- a/docs/cudf/source/conf.py
+++ b/docs/cudf/source/conf.py
@@ -77,9 +77,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = "0.19"
+version = '0.19'
 # The full version, including alpha/beta/rc tags.
-release = "0.19.0"
+release = '0.19.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.