diff --git a/dev-python/numcodecs/ChangeLog b/dev-python/numcodecs/ChangeLog
index 142a71f..0003b6c 100644
--- a/dev-python/numcodecs/ChangeLog
+++ b/dev-python/numcodecs/ChangeLog
@@ -1,3 +1,6 @@
+  09 Feb 2022;  <chymera@gentoo.org> numcodecs-0.9.0.ebuild:
+  dev-python/numcodecs: new package (DANDI stack)  tests fail
+
 *numcodecs-0.9.0 (09 Feb 2022)
 
   09 Feb 2022;  <chymera@gentoo.org> +metadata.xml, +numcodecs-0.9.0.ebuild:
diff --git a/dev-python/numcodecs/numcodecs-0.9.0.ebuild b/dev-python/numcodecs/numcodecs-0.9.0.ebuild
index 6b85146..bad8523 100644
--- a/dev-python/numcodecs/numcodecs-0.9.0.ebuild
+++ b/dev-python/numcodecs/numcodecs-0.9.0.ebuild
@@ -14,6 +14,8 @@ LICENSE="MIT"
 SLOT="0"
 KEYWORDS="~amd64 ~x86"
 IUSE="test"
+# Tests fail for yet unknown reasons:
+# https://github.com/zarr-developers/numcodecs/issues/304
 RESTRICT="!test? ( test )"
 
 RDEPEND="