diff --git a/conda/environments/all_cuda-118_arch-x86_64.yaml b/conda/environments/all_cuda-118_arch-x86_64.yaml
index de6a215c8..da6d2d6ae 100644
--- a/conda/environments/all_cuda-118_arch-x86_64.yaml
+++ b/conda/environments/all_cuda-118_arch-x86_64.yaml
@@ -27,7 +27,7 @@ dependencies:
 - matplotlib-base
 - nbsphinx
 - ninja
-- numpy>=1.21.3
+- numpy>=1.23.4
 - numpydoc>=1.5
 - nvcc_linux-64=11.8
 - openslide-python>=1.3.0
diff --git a/conda/environments/all_cuda-122_arch-x86_64.yaml b/conda/environments/all_cuda-122_arch-x86_64.yaml
index bfdec601c..22532cbc3 100644
--- a/conda/environments/all_cuda-122_arch-x86_64.yaml
+++ b/conda/environments/all_cuda-122_arch-x86_64.yaml
@@ -27,7 +27,7 @@ dependencies:
 - matplotlib-base
 - nbsphinx
 - ninja
-- numpy>=1.21.3
+- numpy>=1.23.4
 - numpydoc>=1.5
 - openslide-python>=1.3.0
 - pip
diff --git a/dependencies.yaml b/dependencies.yaml
index 21ce5f503..1f8283432 100644
--- a/dependencies.yaml
+++ b/dependencies.yaml
@@ -250,7 +250,7 @@ dependencies:
       - output_types: conda
         packages:
           - cupy>=12.0.0
-          - numpy>=1.21.3
+          - numpy>=1.23.4
           # All dependencies below this point are specific to `cucim.clara` and
           # are not needed for either `cucim.core` or `cucim.skimage`. I did
           # not include these under a "pyproject" output so that it is still