diff --git a/requirements-min.txt b/requirements-min.txt
index 2bb63391..a74591a4 100644
--- a/requirements-min.txt
+++ b/requirements-min.txt
@@ -1,6 +1,6 @@
 hdmf==3.14.2
-zarr==2.18.0
-numcodecs==0.10.0
+zarr==2.13.0
+numcodecs==0.9.1
 pynwb==2.5.0
 setuptools
 threadpoolctl==3.1.0