diff --git a/environment-dev.yml b/environment-dev.yml
index b2ff0c6f8..63575cb15 100644
--- a/environment-dev.yml
+++ b/environment-dev.yml
@@ -2,55 +2,45 @@ name: pyjanitor-dev
 channels:
   - conda-forge
 dependencies:
-  - python=3.9
-  - biopython
-  - black=22.1.0
-  - bump2version=1.0.1
-  - cairo
-  - conda
-  - darglint
-  - doc8
-  - flake8
-  - hypothesis
-  - interrogate
-  - ipykernel
-  - ipython
-  - isort
-  - jinja2<3.1.0 # 27 March 2022: https://github.com/pallets/jinja/issues/1631
-  - jupyterlab
-  - lxml
-  - make
-  - mkdocs
-  - mkdocs-material
-  - mkdocstrings-python
-  - missingno
+  - python>=3.6
+  # required
+  - pandas
+  - pandas-flavor
   - multipledispatch
-  - mypy
-  - natsort
-  - numba
-  - numpy
+  - scipy  # math, functions
+
+  # optional
+  - natsort  # functions
+  - numba  # functions
+  - biopython  # biology
+  - rdkit  # chemistry
+  - tqdm  # chemistry
+  - unyt  # engineering
+  - requests  # finance
+  - pyspark>=3.2.0
+  - xarray
+  # io
   - openpyxl
-  - pandas-flavor
+  - xlrd
+
+  # testing
+  - pytest
+  - pytest-cov
+  - pytest-xdist
+  - hypothesis
   - pandas-vet
-  - pandas=1.3.5
-  - pip
-  - pipreqs
+  - interrogate
+
+  # dev
   - pip-tools
   - pre-commit
-  - pyflakes
+  - make
+  # IDE code style
+  - black
   - pylint
-  - pyspark>=3.2.0
-  - pytest
-  - pytest-cov
-  - pytest-xdist
-  - python-language-server
-  - rdkit=2021.09.3
-  - recommonmark
-  - seaborn
-  - twine
-  - unyt
-  - xarray
-  - xlrd
-  - xorg-libxrender
-  - pip:
-      - mknotebooks
+  - isort
+
+  # doc
+  - mkdocs
+  - mkdocs-material
+  - mkdocstrings-python