diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 0ee6e9c65..03b0a88d9 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -3,7 +3,8 @@
 	"image": "mcr.microsoft.com/devcontainers/dotnet:1-8.0-jammy",
 	"features": {
 		"ghcr.io/devcontainers/features/dotnet:2": {
-			"version": "10.0"
+			"version": "10.0",
+			"additionalVersions": "9.0"
 		},
 		"ghcr.io/devcontainers/features/node:1": {}
 	},