diff --git a/pyproject.toml b/pyproject.toml
index af67752d..ebaa7459 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,8 +43,10 @@ dependencies = [
   "tricycle>=0.4.1,<0.5",
   "wrapt>=1.16.0,<2",
   "colorlog>=6.8.2,<7",
+
   # built-in multi-actor `pdb` REPL
   "pdbp>=1.8.2,<2", # windows only (from `pdbp`)
+
   # typed IPC msging
   "msgspec>=0.20.0",
   "bidict>=0.23.1",