diff --git a/extra_requirements/requirements-tests.txt b/extra_requirements/requirements-tests.txt
index 0624a1d5..c71c65c8 100644
--- a/extra_requirements/requirements-tests.txt
+++ b/extra_requirements/requirements-tests.txt
@@ -56,4 +56,4 @@ xarray==2025.1.2
 xedocs==0.2.37
 zarr==2.18.4
 zstandard==0.23.0                                  # strax dependency
-zstd==1.5.6.2                                      # strax dependency
+zstd==1.5.6.5                                      # strax dependency