diff --git a/py-base/Dockerfile b/py-base/Dockerfile
index b072388..cc02e03 100644
--- a/py-base/Dockerfile
+++ b/py-base/Dockerfile
@@ -1,5 +1,5 @@
 #syntax=docker/dockerfile:1.7
-FROM ghcr.io/prefix-dev/pixi:0.28.1-jammy@sha256:846739b8af52235586f263ca4afadc55b84c24d8ecb291ae49fa123de6b2cea4
+FROM ghcr.io/prefix-dev/pixi:0.38.0-jammy@sha256:42d9530a15076a09ba3f64da4d163fdcfe30b728a5221603e2e0a9e9b4d0fae3
 
 ENV NB_USER jovyan
 ENV NB_UID 1000
@@ -27,7 +27,7 @@ USER ${NB_USER}
 
 COPY ./pixi.toml ./pixi.lock ${PIXI_DIR}/
 
-RUN --mount=type=cache,id=ohw_py,target=/home/jovyan/.cache/rattler/cache,uid=${NB_UID},gid=${NB_UID} \
+RUN --mount=type=cache,id=ohw_py,target=${HOME}/.cache/rattler/cache,uid=${NB_UID},gid=${NB_UID} \
     pixi install --frozen -e default
 
 RUN pixi shell-hook --frozen -e default > /srv/shell-hook.sh \
diff --git a/py-base/pixi.lock b/py-base/pixi.lock
index 3d2ef99..0ad8967 100644
--- a/py-base/pixi.lock
+++ b/py-base/pixi.lock
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-    indexes:
-    - https://pypi.org/simple
     packages:
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       - conda: https://conda.anaconda.org/conda-forge/linux-64/_libgcc_mutex-0.1-conda_forge.tar.bz2
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       - conda: https://conda.anaconda.org/conda-forge/linux-64/pillow-10.4.0-py312h56024de_1.conda
+      - conda: https://conda.anaconda.org/conda-forge/noarch/pixi-kernel-0.5.2-pyhd8ed1ab_0.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-64/pixman-0.43.2-h59595ed_0.conda
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       linux-aarch64:
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       - conda: https://conda.anaconda.org/conda-forge/noarch/affine-2.4.0-pyhd8ed1ab_0.conda
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       - conda: https://conda.anaconda.org/conda-forge/linux-aarch64/pillow-10.4.0-py312h18c71c7_1.conda
+      - conda: https://conda.anaconda.org/conda-forge/noarch/pixi-kernel-0.5.2-pyhd8ed1ab_0.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-aarch64/pixman-0.43.4-h2f0025b_0.conda
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       osx-64:
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       - conda: https://conda.anaconda.org/conda-forge/noarch/aiobotocore-2.7.0-pyhd8ed1ab_1.conda
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       - conda: https://conda.anaconda.org/conda-forge/osx-64/pillow-10.4.0-py312h683ea77_1.conda
+      - conda: https://conda.anaconda.org/conda-forge/noarch/pixi-kernel-0.5.2-pyhd8ed1ab_0.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-64/pixman-0.43.4-h73e2aa4_0.conda
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       - conda: https://conda.anaconda.org/conda-forge/osx-arm64/pillow-10.4.0-py312h8609ca0_1.conda
+      - conda: https://conda.anaconda.org/conda-forge/noarch/pixi-kernel-0.5.2-pyhd8ed1ab_0.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-arm64/pixman-0.43.4-hebf3989_0.conda
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-  url: https://files.pythonhosted.org/packages/81/e4/7a987ebecfe5ceaf32db413b67ff18eb3092c598408862fff4d7cc3fd19b/opencv_python-4.10.0.84-cp37-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl
-  sha256: 09a332b50488e2dda866a6c5573ee192fe3583239fb26ff2f7f9ceb0bc119ea6
-  requires_dist:
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-  - numpy>=1.21.0 ; python_full_version < '3.10' and platform_machine == 'arm64' and platform_system == 'Darwin'
-  - numpy>=1.21.2 ; python_full_version >= '3.10'
-  - numpy>=1.21.4 ; python_full_version >= '3.10' and platform_system == 'Darwin'
-  - numpy>=1.23.5 ; python_full_version >= '3.11'
-  - numpy>=1.26.0 ; python_full_version >= '3.12'
-  - numpy>=1.19.3 ; python_full_version >= '3.6' and platform_machine == 'aarch64' and platform_system == 'Linux'
-  - numpy>=1.17.0 ; python_full_version >= '3.7'
-  - numpy>=1.17.3 ; python_full_version >= '3.8'
-  - numpy>=1.19.3 ; python_full_version >= '3.9'
-  requires_python: '>=3.6'
-- kind: pypi
-  name: opencv-python-headless
-  version: 4.10.0.84
-  url: https://files.pythonhosted.org/packages/1c/9b/583c8d9259f6fc19413f83fd18dd8e6cbc8eefb0b4dc6da52dd151fe3272/opencv_python_headless-4.10.0.84-cp37-abi3-macosx_11_0_arm64.whl
-  sha256: a4f4bcb07d8f8a7704d9c8564c224c8b064c63f430e95b61ac0bffaa374d330e
-  requires_dist:
-  - numpy>=1.13.3 ; python_full_version < '3.7'
-  - numpy>=1.21.0 ; python_full_version < '3.10' and platform_machine == 'arm64' and platform_system == 'Darwin'
-  - numpy>=1.21.2 ; python_full_version >= '3.10'
-  - numpy>=1.21.4 ; python_full_version >= '3.10' and platform_system == 'Darwin'
-  - numpy>=1.23.5 ; python_full_version >= '3.11'
-  - numpy>=1.26.0 ; python_full_version >= '3.12'
-  - numpy>=1.19.3 ; python_full_version >= '3.6' and platform_machine == 'aarch64' and platform_system == 'Linux'
-  - numpy>=1.17.0 ; python_full_version >= '3.7'
-  - numpy>=1.17.3 ; python_full_version >= '3.8'
-  - numpy>=1.19.3 ; python_full_version >= '3.9'
-  requires_python: '>=3.6'
-- kind: pypi
-  name: opencv-python-headless
-  version: 4.10.0.84
-  url: https://files.pythonhosted.org/packages/91/61/f838ce2046f3ec3591ea59ea3549085e399525d3b4558c4ed60b55ed88c0/opencv_python_headless-4.10.0.84-cp37-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl
-  sha256: 46071015ff9ab40fccd8a163da0ee14ce9846349f06c6c8c0f2870856ffa45db
-  requires_dist:
-  - numpy>=1.13.3 ; python_full_version < '3.7'
-  - numpy>=1.21.0 ; python_full_version < '3.10' and platform_machine == 'arm64' and platform_system == 'Darwin'
-  - numpy>=1.21.2 ; python_full_version >= '3.10'
-  - numpy>=1.21.4 ; python_full_version >= '3.10' and platform_system == 'Darwin'
-  - numpy>=1.23.5 ; python_full_version >= '3.11'
-  - numpy>=1.26.0 ; python_full_version >= '3.12'
-  - numpy>=1.19.3 ; python_full_version >= '3.6' and platform_machine == 'aarch64' and platform_system == 'Linux'
-  - numpy>=1.17.0 ; python_full_version >= '3.7'
-  - numpy>=1.17.3 ; python_full_version >= '3.8'
-  - numpy>=1.19.3 ; python_full_version >= '3.9'
-  requires_python: '>=3.6'
-- kind: pypi
-  name: opencv-python-headless
-  version: 4.10.0.84
-  url: https://files.pythonhosted.org/packages/c0/7b/b4c67f5dad7a9a61c47f7a39e4050e8a4628bd64b3c3daaeb755d759f928/opencv_python_headless-4.10.0.84-cp37-abi3-macosx_12_0_x86_64.whl
-  sha256: 5ae454ebac0eb0a0b932e3406370aaf4212e6a3fdb5038cc86c7aea15a6851da
-  requires_dist:
-  - numpy>=1.13.3 ; python_full_version < '3.7'
-  - numpy>=1.21.0 ; python_full_version < '3.10' and platform_machine == 'arm64' and platform_system == 'Darwin'
-  - numpy>=1.21.2 ; python_full_version >= '3.10'
-  - numpy>=1.21.4 ; python_full_version >= '3.10' and platform_system == 'Darwin'
-  - numpy>=1.23.5 ; python_full_version >= '3.11'
-  - numpy>=1.26.0 ; python_full_version >= '3.12'
-  - numpy>=1.19.3 ; python_full_version >= '3.6' and platform_machine == 'aarch64' and platform_system == 'Linux'
-  - numpy>=1.17.0 ; python_full_version >= '3.7'
-  - numpy>=1.17.3 ; python_full_version >= '3.8'
-  - numpy>=1.19.3 ; python_full_version >= '3.9'
-  requires_python: '>=3.6'
-- kind: pypi
-  name: opencv-python-headless
-  version: 4.10.0.84
-  url: https://files.pythonhosted.org/packages/d1/09/248f86a404567303cdf120e4a301f389b68e3b18e5c0cc428de327da609c/opencv_python_headless-4.10.0.84-cp37-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
-  sha256: 377d08a7e48a1405b5e84afcbe4798464ce7ee17081c1c23619c8b398ff18295
-  requires_dist:
-  - numpy>=1.13.3 ; python_full_version < '3.7'
-  - numpy>=1.21.0 ; python_full_version < '3.10' and platform_machine == 'arm64' and platform_system == 'Darwin'
-  - numpy>=1.21.2 ; python_full_version >= '3.10'
-  - numpy>=1.21.4 ; python_full_version >= '3.10' and platform_system == 'Darwin'
-  - numpy>=1.23.5 ; python_full_version >= '3.11'
-  - numpy>=1.26.0 ; python_full_version >= '3.12'
-  - numpy>=1.19.3 ; python_full_version >= '3.6' and platform_machine == 'aarch64' and platform_system == 'Linux'
-  - numpy>=1.17.0 ; python_full_version >= '3.7'
-  - numpy>=1.17.3 ; python_full_version >= '3.8'
-  - numpy>=1.19.3 ; python_full_version >= '3.9'
-  requires_python: '>=3.6'
 - kind: conda
   name: openjpeg
   version: 2.5.2
@@ -19502,35 +19320,22 @@ packages:
   - pkg:pypi/pillow?source=hash-mapping
   size: 42413280
   timestamp: 1726075422684
-- kind: pypi
-  name: pint
-  version: 0.24.4
-  url: https://files.pythonhosted.org/packages/b7/16/bd2f5904557265882108dc2e04f18abc05ab0c2b7082ae9430091daf1d5c/Pint-0.24.4-py3-none-any.whl
-  sha256: aa54926c8772159fcf65f82cc0d34de6768c151b32ad1deb0331291c38fe7659
-  requires_dist:
-  - platformdirs>=2.1.0
-  - typing-extensions>=4.0.0
-  - flexcache>=0.3
-  - flexparser>=0.4
-  - babel<=2.8 ; extra == 'babel'
-  - pytest ; extra == 'bench'
-  - pytest-codspeed ; extra == 'bench'
-  - dask ; extra == 'dask'
-  - mip>=1.13 ; extra == 'mip'
-  - numpy>=1.23 ; extra == 'numpy'
-  - pint-pandas>=0.3 ; extra == 'pandas'
-  - pytest ; extra == 'test'
-  - pytest-mpl ; extra == 'test'
-  - pytest-cov ; extra == 'test'
-  - pytest-subtests ; extra == 'test'
-  - pytest-benchmark ; extra == 'test'
-  - pytest ; extra == 'testbase'
-  - pytest-cov ; extra == 'testbase'
-  - pytest-subtests ; extra == 'testbase'
-  - pytest-benchmark ; extra == 'testbase'
-  - uncertainties>=3.1.6 ; extra == 'uncertainties'
-  - xarray ; extra == 'xarray'
-  requires_python: '>=3.9'
+- kind: conda
+  name: pixi-kernel
+  version: 0.5.2
+  build: pyhd8ed1ab_0
+  subdir: noarch
+  noarch: python
+  url: https://conda.anaconda.org/conda-forge/noarch/pixi-kernel-0.5.2-pyhd8ed1ab_0.conda
+  sha256: a8888f2023725a887da5ae2f0c17c7260d719486710d30e276df6a5c4904a363
+  md5: 41256cd3428671354dd39af67f7c8dd1
+  depends:
+  - jupyter_client >=7
+  - pydantic >=2,<3
+  - python >=3.9
+  license: MIT
+  size: 29833
+  timestamp: 1732885452920
 - kind: conda
   name: pixman
   version: 0.43.2
@@ -19662,11 +19467,6 @@ packages:
   - pkg:pypi/ply?source=hash-mapping
   size: 49196
   timestamp: 1712243121626
-- kind: pypi
-  name: polygon3
-  version: 3.0.9.1
-  url: https://files.pythonhosted.org/packages/1f/26/eea4112be43c8b7345477ad9150d499303494f32fb5951cb0f6e9104045b/Polygon3-3.0.9.1.tar.gz
-  sha256: 2ddf8d06975f728d5b40786136c82e5b9d38a846bce236b7e6587bbd6a5e9b49
 - kind: conda
   name: pooch
   version: 1.8.2
@@ -20898,24 +20698,6 @@ packages:
   - pkg:pypi/pydantic-core?source=hash-mapping
   size: 1612296
   timestamp: 1720041586700
-- kind: pypi
-  name: pyeddytracker
-  version: 3.5.0
-  url: https://files.pythonhosted.org/packages/c8/ba/41f82b578c9c6f82da2d4bcdcd275292d8017cecff1d4e66e1dd89dbb206/pyEddyTracker-3.5.0-py3-none-any.whl
-  sha256: 21ba8891905a862d98431a0caed911de902163888c9e47c1605f92f10aa3a46d
-  requires_dist:
-  - matplotlib
-  - netcdf4
-  - numba>=0.53
-  - numpy
-  - opencv-python
-  - pint
-  - polygon3
-  - pyyaml
-  - requests
-  - scipy
-  - zarr
-  requires_python: '>=3.7'
 - kind: conda
   name: pygments
   version: 2.18.0
@@ -26113,6 +25895,58 @@ packages:
   - pkg:pypi/zict?source=hash-mapping
   size: 36325
   timestamp: 1681770298596
+- kind: conda
+  name: zip
+  version: '3.0'
+  build: h0dc2134_3
+  build_number: 3
+  subdir: osx-64
+  url: https://conda.anaconda.org/conda-forge/osx-64/zip-3.0-h0dc2134_3.conda
+  sha256: 8580f3772973080e982f594c5b3d6f14f27f7bffab23ed2d03929993280f7453
+  md5: 11e2819b7a47c028678b3d9fb6928bbf
+  license: BSD-like
+  size: 173079
+  timestamp: 1696102470446
+- kind: conda
+  name: zip
+  version: '3.0'
+  build: h31becfc_3
+  build_number: 3
+  subdir: linux-aarch64
+  url: https://conda.anaconda.org/conda-forge/linux-aarch64/zip-3.0-h31becfc_3.conda
+  sha256: a6c140e1d20b1b4a55d55d734de40cb52ed989c6a3136dc9eaeeb039febb2aea
+  md5: d946c2e76322dfc0a5a096b4348597fe
+  depends:
+  - libgcc-ng >=12
+  license: BSD-like
+  size: 186826
+  timestamp: 1696102373983
+- kind: conda
+  name: zip
+  version: '3.0'
+  build: hb547adb_3
+  build_number: 3
+  subdir: osx-arm64
+  url: https://conda.anaconda.org/conda-forge/osx-arm64/zip-3.0-hb547adb_3.conda
+  sha256: 05b215710e288b21ad964433fb5b25c3d2597fdedfa956623b17bf241c2898b6
+  md5: 7ffee09f278066195b6b3aa9a3a3a9d3
+  license: BSD-like
+  size: 173575
+  timestamp: 1696102479627
+- kind: conda
+  name: zip
+  version: '3.0'
+  build: hd590300_3
+  build_number: 3
+  subdir: linux-64
+  url: https://conda.anaconda.org/conda-forge/linux-64/zip-3.0-hd590300_3.conda
+  sha256: 36278352573704156e60a8db8e7d8c1d20bc55b7d13db779303bffb3427effcb
+  md5: 4ff9a959f824eb05cc82024369d61e2b
+  depends:
+  - libgcc-ng >=12
+  license: BSD-like
+  size: 176792
+  timestamp: 1696102326008
 - kind: conda
   name: zipp
   version: 3.19.2
diff --git a/py-base/pixi.toml b/py-base/pixi.toml
index 781add0..0867a86 100644
--- a/py-base/pixi.toml
+++ b/py-base/pixi.toml
@@ -11,11 +11,7 @@ lab = "jupyter lab --port=8080 --ip=0.0.0.0"
 
 [dependencies]
 python = "3.12.*"
-# Use a newer pangeo-notebook version if there is one?
 pangeo-notebook = "2024.08.07.*"
-# 2024-10-2: Removed for OHWes24 Intermediate Workshop,
-# to minimize clutter on JupyterLab
-# pixi-kernel = ">=0.4.0,<0.5"
 pooch = ">=1.8.2,<1.9"
 curl = ">=8.7.1,<8.8"
 git = "*"
@@ -36,6 +32,8 @@ fsspec = ">=2024.6.1"
 gcsfs = ">=2024.6.1,<2024.7"
 jupyterlab-git = ">=0.50.1,<0.51"
 tldr = ">=3.3.0,<3.4"
+pixi-kernel = ">=0.5.2,<0.6"
+zip = ">=3.0,<4"
 
 [feature.ohwes24intermed-Charles.dependencies]
 basemap = "*"
@@ -74,10 +72,6 @@ parcels = "*"
 [feature.ohwes24hackaton-Julia.dependencies]
 earthaccess = "*"
 
-[feature.ohwes24hackaton-Charles.pypi-dependencies]
-opencv-python-headless = "*"
-pyeddytracker = ">=3.5.0, <4"
-
 
 [environments]
-default = {features = ["ohwes-langpacks", "ohwes24intermed-Charles", "ohwes24intermed-LauraYeray", "ohwes24intermed-Julia", "ohwes24hackaton-Laura", "ohwes24hackaton-Julia", "ohwes24hackaton-Charles"]}
+default = {features = ["ohwes-langpacks", "ohwes24intermed-Charles", "ohwes24intermed-LauraYeray", "ohwes24intermed-Julia", "ohwes24hackaton-Laura", "ohwes24hackaton-Julia"]}