diff --git a/manage b/manage
index b70e81f52..0c0e851c7 100755
--- a/manage
+++ b/manage
@@ -687,6 +687,8 @@ test.pylint() {
 test.pyright() {
     build_msg TEST "[pyright] static type check of python sources"
     nodejs.ensure
+    # We run Pyright in the virtual environment because Pyright
+    # executes "python" to determine the Python version.
     pyenv.cmd pyright
     dump_return $?
 }