diff --git a/dev-requirements.txt b/dev-requirements.txt
index 5736f9761..a72bb44df 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,6 +1,7 @@
 attrs==23.1.0
 chardet==5.2.0
 chartpress==2.2.0
+cookiecutter==2.6.0
 git+https://github.com/berkeley-dsep-infra/hubploy.git
 jupyter-repo2docker==2024.07.0
 myst-parser==4.0.0
@@ -8,5 +9,6 @@ niquests==3.7.2
 pre-commit==4.0.1
 pygithub==2.4.0
 pyrsistent==0.19.3
+ruff==0.7.0
 urllib3==2.2.3
 yamllint==1.35.1