diff --git a/Dockerfile b/Dockerfile
index 9184847..851a3b4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM sphinxdoc/sphinx:2.4.4
+FROM sphinxdoc/sphinx:3.4.1
 
 LABEL "maintainer"="Ammar Askar <ammar@ammaraskar.com>"