diff --git a/dev-python/typer/typer-0.12.1.ebuild b/dev-python/typer/typer-0.12.1.ebuild
index 306a94f..cec0932 100644
--- a/dev-python/typer/typer-0.12.1.ebuild
+++ b/dev-python/typer/typer-0.12.1.ebuild
@@ -24,7 +24,10 @@ IUSE="+rich shell-detection test"
 
 BDEPEND="
 	test? (
-		$(python_gen_cond_dep 'dev-python/coverage[${PYTHON_USEDEP}]')
+		$(python_gen_cond_dep '
+			dev-python/coverage[${PYTHON_USEDEP}]
+			dev-python/shellingham[${PYTHON_USEDEP}]
+		')
 	)
 "
 RDEPEND="