diff --git a/pw_build/docs.rst b/pw_build/docs.rst
index c2fe2f5..db3725d 100644
--- a/pw_build/docs.rst
+++ b/pw_build/docs.rst
@@ -146,7 +146,7 @@
 any outputs. Sometimes scripts run in a build do not directly produce output
 files, but GN requires that all actions have an output. ``pw_python_action``
 solves this by accepting a boolean ``stamp`` argument which tells it to create a
-dummy output file for the action.
+placeholder output file for the action.
 
 **Arguments**
 
@@ -158,7 +158,7 @@
 * ``capture_output``: Optional boolean. If true, script output is hidden unless
   the script fails with an error. Defaults to true.
 * ``stamp``: Optional variable indicating whether to automatically create a
-  dummy output file for the script. This allows running scripts without
+  placeholder output file for the script. This allows running scripts without
   specifying ``outputs``. If ``stamp`` is true, a generic output file is
   used. If ``stamp`` is a file path, that file is used as a stamp file. Like any
   output file, ``stamp`` must be in the build directory. Defaults to false.
diff --git a/pw_build/python.rst b/pw_build/python.rst
index 3079083..71e0eb1 100644
--- a/pw_build/python.rst
+++ b/pw_build/python.rst
@@ -166,7 +166,7 @@
 (``.whl``) for the Python package. The ``pw_python_wheels`` template figures
 out which wheels to collect by traversing the ``pw_python_package_wheels``
 `GN metadata
-<https://gn.googlesource.com/gn/+/master/docs/reference.md#var_metadata>`_ key,
+<https://gn.googlesource.com/gn/+/HEAD/docs/reference.md#var_metadata>`_ key,
 which lists the output directory for each wheel.
 
 The ``pw_mirror_tree`` template is then used to collect wheels in an output
diff --git a/pw_build/python_action.gni b/pw_build/python_action.gni
index c0396aa..fe31801 100644
--- a/pw_build/python_action.gni
+++ b/pw_build/python_action.gni
@@ -29,8 +29,8 @@
 #
 #   stamp           File to touch if the script is successful. Actions that
 #                   don't create output files can use this stamp file instead of
-#                   creating their own dummy file. If true, a generic file is
-#                   used. If false or not set, no file is touched.
+#                   creating their own placeholder file. If true, a generic file
+#                   is used. If false or not set, no file is touched.
 #
 #   directory       The directory from which to execute the Python script. Paths
 #                   in args may need to be adjusted to be relative to this