diff --git a/extra_requirements/requirements-tests.txt b/extra_requirements/requirements-tests.txt
index 0624a1d5..3f4dfc88 100644
--- a/extra_requirements/requirements-tests.txt
+++ b/extra_requirements/requirements-tests.txt
@@ -54,6 +54,6 @@ uproot==5.5.1
 utilix==0.11.0                                     # dependency for straxen, admix
 xarray==2025.1.2
 xedocs==0.2.37
-zarr==2.18.4
+zarr==3.0.7
 zstandard==0.23.0                                  # strax dependency
 zstd==1.5.6.2                                      # strax dependency