diff --git a/.github/conda-env/build-env.yml b/.github/conda-env/build-env.yml
index f747a77e..64ef8932 100644
--- a/.github/conda-env/build-env.yml
+++ b/.github/conda-env/build-env.yml
@@ -1,4 +1,4 @@
 name: build-env
 dependencies:
   - boa
-  - numpy
+  - numpy!=1.23.0
diff --git a/.github/workflows/slycot-build-and-test.yml b/.github/workflows/slycot-build-and-test.yml
index 54367ed2..b8f84ade 100644
--- a/.github/workflows/slycot-build-and-test.yml
+++ b/.github/workflows/slycot-build-and-test.yml
@@ -167,7 +167,6 @@ jobs:
         shell: bash -l {0}
         run: |
           set -e
-          mamba install boa numpy
           numpyversion=$(python -c 'import numpy; print(numpy.version.version)')
           conda mambabuild --python "${{ matrix.python }}" --numpy $numpyversion conda-recipe
           # preserve directory structure for custom conda channel
diff --git a/conda-recipe/meta.yaml b/conda-recipe/meta.yaml
index 55314c06..b3e846db 100644
--- a/conda-recipe/meta.yaml
+++ b/conda-recipe/meta.yaml
@@ -27,7 +27,7 @@ requirements:
     - libcblas * *netlib
     - liblapack * *netlib
     - python
-    - numpy
+    - numpy!=1.23.0
     - pip
     - scikit-build >=0.14.1
 
diff --git a/pyproject.toml b/pyproject.toml
index 206a1e60..e55372af 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,5 +4,5 @@ requires = [
     "wheel",
     "scikit-build>=0.14.1",
     "cmake",
-    "numpy"]
+    "numpy!=1.23.0"]
 build-backend = "setuptools.build_meta"