diff --git a/build/pkgs/bleach/dependencies b/build/pkgs/bleach/dependencies
index f3c4588b535..7b139dc904c 100644
--- a/build/pkgs/bleach/dependencies
+++ b/build/pkgs/bleach/dependencies
@@ -1,4 +1,4 @@
-$(PYTHON) packaging | $(PYTHON_TOOLCHAIN)
+$(PYTHON) packaging six | $(PYTHON_TOOLCHAIN)
 
 ----------
 All lines of this file are ignored except the first.