diff --git a/environment-dev.yml b/environment-dev.yml
index eb2419fb..0d57cce5 100644
--- a/environment-dev.yml
+++ b/environment-dev.yml
@@ -4,6 +4,7 @@ channels:
 dependencies:
   - uvicorn
   - fastapi
+  - requests
   # Later versions were yanked in PyPi, but unfortunately not on conda-forge
   # https://pypi.org/project/python-multipart/0.0.14/
   - python-multipart <= 0.0.12
@@ -23,6 +24,10 @@ dependencies:
   - python-slugify
   - cachetools
   - structlog
+  - pyjwt
   - gradio
   - gitpython
+  - playwright
+  - pytest-playwright
+  - pre-commit
   - conda-project=0.4.2
diff --git a/pyproject.toml b/pyproject.toml
index 5066198a..3621398e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,6 +35,19 @@ dependencies = [
 ]
 dynamic = ["version"]
 
+[project.optional-dependencies]
+dev = [
+    "ruff",
+    "voila",
+    "dash",
+    "streamlit",
+    "gradio",
+    "pytest",
+    "playwright",
+    "pytest-playwright",
+    "pre-commit",
+]
+
 [project.entry-points.jhub_apps]
 jhub_apps = "jhub_apps"