diff --git a/_requirements.txt b/_requirements.txt
deleted file mode 100644
index 96cfad1..0000000
--- a/_requirements.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-# Legacy file used only if pip still installs from requirements.txt.
-# You may delete this file once you switch entirely to pyproject.toml.
-
-PyYAML