diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 11a39cf6b..b6324aa7a 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/nunit/docfx-action:v3.4.2
+FROM ghcr.io/nunit/docfx-action:v4.0.0
 EXPOSE 8080
 ARG NODE_MAJOR=20