diff --git a/pixi.lock b/pixi.lock
index d78158c..792267b 100644
--- a/pixi.lock
+++ b/pixi.lock
@@ -341,7 +341,7 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/linux-64/numba-0.60.0-py312h83e6fd3_0.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/numba_celltree-0.2.0-pyhd8ed1ab_0.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-64/numcodecs-0.13.0-py312h1df14c2_0.conda
-      - conda: https://conda.anaconda.org/conda-forge/linux-64/numpy-2.0.2-py312h58c1407_0.conda
+      - conda: https://conda.anaconda.org/conda-forge/linux-64/numpy-1.26.4-py312heda63a1_0.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-64/ocl-icd-2.3.2-hd590300_1.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-64/openh264-2.4.1-h59595ed_0.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-64/openjpeg-2.5.2-h488ebb8_0.conda
@@ -835,7 +835,7 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/osx-64/numba-0.60.0-py312hc3b515d_0.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/numba_celltree-0.2.0-pyhd8ed1ab_0.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-64/numcodecs-0.13.0-py312h1171441_0.conda
-      - conda: https://conda.anaconda.org/conda-forge/osx-64/numpy-2.0.2-py312he4d506f_0.conda
+      - conda: https://conda.anaconda.org/conda-forge/osx-64/numpy-1.26.4-py312he3a82b2_0.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-64/openh264-2.4.1-h73e2aa4_0.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-64/openjpeg-2.5.2-h7310d3a_0.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-64/openssl-3.3.1-hd23fc13_3.conda
@@ -1257,7 +1257,7 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/win-64/numba-0.60.0-py312hcccf92d_0.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/numba_celltree-0.2.0-pyhd8ed1ab_0.conda
       - conda: https://conda.anaconda.org/conda-forge/win-64/numcodecs-0.13.0-py312h72972c8_0.conda
-      - conda: https://conda.anaconda.org/conda-forge/win-64/numpy-2.0.2-py312h49bc9c5_0.conda
+      - conda: https://conda.anaconda.org/conda-forge/win-64/numpy-1.26.4-py312h8753938_0.conda
       - conda: https://conda.anaconda.org/conda-forge/win-64/openh264-2.4.1-h63175ca_0.conda
       - conda: https://conda.anaconda.org/conda-forge/win-64/openjpeg-2.5.2-h3d672ee_0.conda
       - conda: https://conda.anaconda.org/conda-forge/win-64/openssl-3.3.1-h2466b09_3.conda
@@ -14363,12 +14363,12 @@ packages:
   timestamp: 1724107502989
 - kind: conda
   name: numpy
-  version: 2.0.2
-  build: py312h49bc9c5_0
+  version: 1.26.4
+  build: py312h8753938_0
   subdir: win-64
-  url: https://conda.anaconda.org/conda-forge/win-64/numpy-2.0.2-py312h49bc9c5_0.conda
-  sha256: 14f0707f73ea97579b8400e55bc394b9ddf7fdbcc87eb8ad9068b6ebbe62b97c
-  md5: 6be606bcfd79a5958b19a437b16028aa
+  url: https://conda.anaconda.org/conda-forge/win-64/numpy-1.26.4-py312h8753938_0.conda
+  sha256: 73570817a5109d396b4ebbe5124a89525959269fd33fa33fd413700289fbe0ef
+  md5: f9ac74c3b07c396014434aca1e58d362
   depends:
   - libblas >=3.9.0,<4.0a0
   - libcblas >=3.9.0,<4.0a0
@@ -14382,53 +14382,51 @@ packages:
   - numpy-base <0a0
   license: BSD-3-Clause
   license_family: BSD
-  size: 6889345
-  timestamp: 1724749766610
+  size: 6495445
+  timestamp: 1707226412944
 - kind: conda
   name: numpy
-  version: 2.0.2
-  build: py312h58c1407_0
-  subdir: linux-64
-  url: https://conda.anaconda.org/conda-forge/linux-64/numpy-2.0.2-py312h58c1407_0.conda
-  sha256: 8c54907fdc60b5f51bb505f2414e9a75d07e0c56d77651010428de91e8343843
-  md5: c705a6295a3946400a0c0893dbec87bb
+  version: 1.26.4
+  build: py312he3a82b2_0
+  subdir: osx-64
+  url: https://conda.anaconda.org/conda-forge/osx-64/numpy-1.26.4-py312he3a82b2_0.conda
+  sha256: 6152b73fba3e227afa4952df8753128fc9669bbaf142ee8f9972bf9df3bf8856
+  md5: 96c61a21c4276613748dba069554846b
   depends:
-  - __glibc >=2.17,<3.0.a0
   - libblas >=3.9.0,<4.0a0
   - libcblas >=3.9.0,<4.0a0
-  - libgcc-ng >=13
+  - libcxx >=16
   - liblapack >=3.9.0,<4.0a0
-  - libstdcxx-ng >=13
   - python >=3.12,<3.13.0a0
   - python_abi 3.12.* *_cp312
   constrains:
   - numpy-base <0a0
   license: BSD-3-Clause
   license_family: BSD
-  size: 8383737
-  timestamp: 1724749066469
+  size: 6990646
+  timestamp: 1707226178262
 - kind: conda
   name: numpy
-  version: 2.0.2
-  build: py312he4d506f_0
-  subdir: osx-64
-  url: https://conda.anaconda.org/conda-forge/osx-64/numpy-2.0.2-py312he4d506f_0.conda
-  sha256: 8f766bf4a1d34b9f0150aee5272484adf52a73083c5749261e1e66cfa0c741a4
-  md5: f565ae6749c3757d3cb87a9d2953bed8
+  version: 1.26.4
+  build: py312heda63a1_0
+  subdir: linux-64
+  url: https://conda.anaconda.org/conda-forge/linux-64/numpy-1.26.4-py312heda63a1_0.conda
+  sha256: fe3459c75cf84dcef6ef14efcc4adb0ade66038ddd27cadb894f34f4797687d8
+  md5: d8285bea2a350f63fab23bf460221f3f
   depends:
-  - __osx >=10.13
   - libblas >=3.9.0,<4.0a0
   - libcblas >=3.9.0,<4.0a0
-  - libcxx >=17
+  - libgcc-ng >=12
   - liblapack >=3.9.0,<4.0a0
+  - libstdcxx-ng >=12
   - python >=3.12,<3.13.0a0
   - python_abi 3.12.* *_cp312
   constrains:
   - numpy-base <0a0
   license: BSD-3-Clause
   license_family: BSD
-  size: 7427254
-  timestamp: 1724749204501
+  size: 7484186
+  timestamp: 1707225809722
 - kind: conda
   name: ocl-icd
   version: 2.3.2
diff --git a/pixi.toml b/pixi.toml
index 288045a..40f1a3a 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -23,6 +23,7 @@ docs = { cmd = "export QUARTO_PYTHON=python && quarto preview docs", depends_on
 
 [dependencies]
 imod = ">=0.17.1"
+numpy = "<2"
 jupyterlab = "*"
 pre-commit = "*"
 primod = "*"