diff --git a/ci/pyuvdata_tests.yml b/ci/pyuvdata_tests.yml
index 5cbba7507c..70830c289e 100644
--- a/ci/pyuvdata_tests.yml
+++ b/ci/pyuvdata_tests.yml
@@ -6,7 +6,7 @@ dependencies:
   - astropy-healpix>=0.6
   - astroquery>=0.4.4
   - docstring_parser>=0.15
-  - h5py>=3.1
+  - h5py>=3.9  # not 3.1 because of deprecation warnings with numpy >= 1.25
   - hdf5plugin>=3.1.0
   - numpy>=1.20.*
   - pyerfa>=2.0