diff --git a/software/environment-conda-forge.yml b/software/environment-conda-forge.yml
index 26bd908e..10bc0c35 100644
--- a/software/environment-conda-forge.yml
+++ b/software/environment-conda-forge.yml
@@ -25,3 +25,4 @@ dependencies:
   - yapf
   - scalene
   - ruff
+  - altair-all
diff --git a/software/environment.yml b/software/environment.yml
index faa09e14..387e907c 100644
--- a/software/environment.yml
+++ b/software/environment.yml
@@ -25,3 +25,4 @@ dependencies:
   - yapf
   - scalene
   - ruff
+  - altair-all