diff --git a/makefile b/makefile
--- a/makefile
+++ b/makefile
@@ -44,7 +44,7 @@ bin/node:
 
 pdm_local_install:
 	# drew has ~/bin in $PATH
-	pip install pdm
+	pip install "pdm==1.15.0"
 	ln -s ../.local/bin/pdm ~/bin
 
 js: