diff --git a/pyproject.toml b/pyproject.toml
index 027c3839..d27d0ed4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,8 +29,8 @@ dependencies = [
     "chex>=0.1.85",
     "equinox @ git+https://github.com/patrick-kidger/equinox@1e601672d38d2c4d483535070a3572d8e8508a20",
     "PyYAML>=6.0.1",
-    "xarray>=2023.12.0",
-    "netcdf4>=1.6.5",
+    "xarray>=2023.12.0,<=2024.06.0",
+    "netcdf4>=1.6.5,<1.7.1",
     "h5netcdf>=1.3.0",
     "scipy>=1.12.0",
     "jaxtyping>=0.2.28",