diff --git a/.devcontainer/post-create.sh b/.devcontainer/post-create.sh
index 2caf8be4..8d89fc82 100644
--- a/.devcontainer/post-create.sh
+++ b/.devcontainer/post-create.sh
@@ -1,6 +1,8 @@
 #!/bin/bash
 
 pip3 install schematicpy==24.7.2
+pip install linkml==v1.8.1
+npm install -g json-dereference-cli
 sudo bash < <(curl -s https://raw.githubusercontent.com/babashka/babashka/master/install)
 git clone --depth 1 https://github.com/anngvu/retold.git