diff --git a/pages/common/poetry.md b/pages/common/poetry.md
index 76bf7c5e2..0367f75d0 100644
--- a/pages/common/poetry.md
+++ b/pages/common/poetry.md
@@ -11,6 +11,10 @@
 
 `poetry add {{dependency}}`
 
+- Install a development dependency and its subdependencies:
+
+`poetry add --dev {{dependency}}`
+
 - Interactively initialize the current directory as a new Poetry project:
 
 `poetry init`