diff --git a/conda/environments/all_cuda-118_arch-x86_64.yaml b/conda/environments/all_cuda-118_arch-x86_64.yaml
index 126a1ae02..190c5d319 100644
--- a/conda/environments/all_cuda-118_arch-x86_64.yaml
+++ b/conda/environments/all_cuda-118_arch-x86_64.yaml
@@ -30,7 +30,7 @@ dependencies:
 - nbsphinx
 - nccl
 - ninja
-- numpy>=1.23
+- numpy>=1.23,<2.0a0
 - numpydoc
 - nvcc_linux-64=11.8
 - pre-commit
diff --git a/conda/environments/all_cuda-122_arch-x86_64.yaml b/conda/environments/all_cuda-122_arch-x86_64.yaml
index 5f765c652..732e9fcff 100644
--- a/conda/environments/all_cuda-122_arch-x86_64.yaml
+++ b/conda/environments/all_cuda-122_arch-x86_64.yaml
@@ -31,7 +31,7 @@ dependencies:
 - nbsphinx
 - nccl
 - ninja
-- numpy>=1.23
+- numpy>=1.23,<2.0a0
 - numpydoc
 - pre-commit
 - pydata-sphinx-theme
diff --git a/dependencies.yaml b/dependencies.yaml
index 2425d2e37..c699ba389 100644
--- a/dependencies.yaml
+++ b/dependencies.yaml
@@ -213,7 +213,7 @@ dependencies:
       - output_types: [conda, requirements]
         packages:
           - ninja
-          - numpy>=1.23
+          - numpy>=1.23,<2.0a0
           - pytest
           - pytest-forked
           - pytest-xdist