diff --git a/.github/conda-env/build-env.yml b/.github/conda-env/build-env.yml
index 64ef8932..d932718f 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!=1.23.0
+  - numpy <1.24
diff --git a/conda-recipe/meta.yaml b/conda-recipe/meta.yaml
index 1f3314db..8ee41ce3 100644
--- a/conda-recipe/meta.yaml
+++ b/conda-recipe/meta.yaml
@@ -27,7 +27,7 @@ requirements:
     - libcblas * *netlib
     - liblapack * *netlib
     - python
-    - numpy !=1.23.0
+    - numpy <1.24
     - pip
     - scikit-build >=0.15
     - setuptools >=45
diff --git a/pyproject.toml b/pyproject.toml
index 94af52dd..cb13a95e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,8 @@ requires = [
     "wheel",
     "scikit-build>=0.15",
     "cmake>=3.14",
-    "numpy!=1.23.0"]
+    # python-control/Slycot/issues/187
+    "numpy<1.24"]
 build-backend = "setuptools.build_meta"
 
 [project]