diff --git a/setup.py b/setup.py
index af123f52..259fe2e6 100644
--- a/setup.py
+++ b/setup.py
@@ -40,7 +40,7 @@
 _PACKAGE_NAME = "sparsezoo" if is_release else "sparsezoo-nightly"
 
 _deps = [
-    "numpy>=1.0.0",
+    "numpy>=1.0.0,<=1.21.6",
     "onnx>=1.5.0,<=1.12.0",
     "pyyaml>=5.1.0",
     "requests>=2.0.0",
diff --git a/src/sparsezoo/version.py b/src/sparsezoo/version.py
index 7b93553f..30ad222a 100644
--- a/src/sparsezoo/version.py
+++ b/src/sparsezoo/version.py
@@ -20,7 +20,7 @@
 from datetime import date
 
 
-version_base = "1.3.0"
+version_base = "1.3.1"
 is_release = False  # change to True to set the generated version as a release version