diff --git a/env/gds_amd64.yml b/env/gds_amd64.yml
index 2044aa7..01c5b59 100644
--- a/env/gds_amd64.yml
+++ b/env/gds_amd64.yml
@@ -84,6 +84,7 @@ dependencies:
   - xlrd
   - xlsxwriter
   - xvec
+  - zarr
     #--- R ---#
   - r-base
   - r-irkernel
diff --git a/env/gds_arm64.yml b/env/gds_arm64.yml
index 29a9387..cb221bd 100644
--- a/env/gds_arm64.yml
+++ b/env/gds_arm64.yml
@@ -84,6 +84,7 @@ dependencies:
   - xlrd
   - xlsxwriter
   - xvec
+  - zarr
     #--- R ---#
   - r-base
   - r-irkernel