diff --git a/environment.yml b/environment.yml
index 8c2f50c36..b5ad0bb15 100644
--- a/environment.yml
+++ b/environment.yml
@@ -16,7 +16,6 @@ channels:
 dependencies:
   - bottleneck
   # - cudatoolkit=11.3 # dlc-only
-  - cupy
   # - ffmpeg # dlc-only
   - ipympl
   - jupyterlab>=3.*
@@ -37,6 +36,7 @@ dependencies:
   # - torchvision # dlc-only
   - track_linearization>=2.3
   - pip:
+      - "black[jupyter]"
       - datajoint>=0.13.6
       # - deeplabcut<2.3.0 # dlc-only
       - ghostipy # for common_filter
diff --git a/environment_dlc.yml b/environment_dlc.yml
index 9483978f8..a97f6bcd8 100644
--- a/environment_dlc.yml
+++ b/environment_dlc.yml
@@ -16,7 +16,6 @@ channels:
 dependencies:
   - bottleneck
   - cudatoolkit=11.3   # dlc-only
-  - cupy
   - ffmpeg   # dlc-only
   - ipympl
   - jupyterlab>=3.*
@@ -37,6 +36,7 @@ dependencies:
   - torchvision  # dlc-only
   - track_linearization>=2.3
   - pip:
+      - "black[jupyter]"
       - datajoint>=0.13.6
       - deeplabcut<2.3.0
       - ghostipy # for common_filter
diff --git a/pyproject.toml b/pyproject.toml
index 8301ca8d8..faf6d9442 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,6 +35,7 @@ keywords = [
     "sortingview",
 ]
 dependencies = [
+    "black[jupyter]",
     "bottleneck",
     "dask",
     "datajoint>=0.13.6",
@@ -68,7 +69,6 @@ spyglass_cli = "spyglass.cli:cli"
 [project.optional-dependencies]
 dlc = ["ffmpeg", "numba>=0.54", "deeplabcut<2.3.0"]
 test = [
-    "black[jupyter]", # code formatting, rather than a 'dev' install
     "click",          # for CLI subpackage only
     "docker",         # for tests in a container
     "pytest",         # unit testing