diff --git a/dev-environment.yml b/dev-environment.yml
index f10ee64d..282b213f 100644
--- a/dev-environment.yml
+++ b/dev-environment.yml
@@ -46,6 +46,7 @@ dependencies:
   - pytest-cov
   - ruff
   - sphinx
+  - sphinx-copybutton
   - sphinx_rtd_theme
   - pip
   - pip: