diff --git a/env/gds_amd64.yml b/env/gds_amd64.yml
index 01c5b59..44f6c2e 100644
--- a/env/gds_amd64.yml
+++ b/env/gds_amd64.yml
@@ -47,6 +47,7 @@ dependencies:
   - pip:
     - matplotlib-scalebar
     - polars
+    - polars-h3
     - pymorton
     - pytest-cov
     - pytest-tornasync
diff --git a/env/gds_arm64.yml b/env/gds_arm64.yml
index cb221bd..126c9a0 100644
--- a/env/gds_arm64.yml
+++ b/env/gds_arm64.yml
@@ -47,6 +47,7 @@ dependencies:
   - pip:
     - matplotlib-scalebar
     - polars
+    - polars-h3
     - pymorton
     - pytest-cov
     - pytest-tornasync