diff --git a/pyproject.toml b/pyproject.toml
index c63399200..25e4661f4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,3 @@
 [build-system]
-requires = ["setuptools>=40.8.0", "wheel"] 
+requires = ["setuptools>=40.8.0", "wheel", "oldest-supported-numpy"] 
 build-backend = "setuptools.build_meta"
diff --git a/setup.py b/setup.py
index 352f6f216..5f0cf0b4f 100644
--- a/setup.py
+++ b/setup.py
@@ -120,7 +120,7 @@ def readme():
           packages=find_packages(),
           python_requires='~=3.6',
           install_requires=[
-              'numpy>=1.15', 'scipy>=0.20.1', 'networkx',
+              'numpy', 'scipy>=0.20.1', 'networkx',
               'matplotlib', 'hmmlearn>=0.2.1',
               'ase', 'scour', 'tqdm',
               'coloredlogs',
@@ -144,7 +144,7 @@ def readme():
               'setuptools_scm',
               'pytest-runner',
               'cython>=0.16',
-              'numpy>=1.15',
+              'numpy',
           ],
           package_data={
               'reacnetgenerator': ['static/webpack/bundle.html',