diff --git a/pyproject.toml b/pyproject.toml
index 13e9b55..dea6aef 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,8 @@ dependencies = [
     "matplotlib>=3.8.2",
     "multiprocess",
     "numba>=0.59.0",
-    "numpy>=1.26.2",
+    # TODO unpin when https://github.com/Unidata/netcdf4-python/issues/1343 is resolved
+    "numpy>=1.26.2,<2.0.0",
     "opencv-python>=4.9.0.80",
     "pandas>=2.1.4",
     "pillow>=10.1.0",