diff --git a/cmake/scripts/codegen/requirements.txt b/cmake/scripts/codegen/requirements.txt
index a10406e9fc..ca5667dcff 100644
--- a/cmake/scripts/codegen/requirements.txt
+++ b/cmake/scripts/codegen/requirements.txt
@@ -3,13 +3,16 @@
 # These packages are required to run the code generation scripts that
 # parse macro files and generate C++ wrapper classes.
 #
-# To update a package to the latest version (hashin will update the
-# version and hashes in this file automatically):
+# To update a package to the latest version (hashin will rewrite the
+# entry in this file with the new version and hashes):
 #   pip install hashin
 #   hashin <package> cmake/scripts/codegen/requirements.txt
 # Or to pin a specific version:
 #   hashin <package>==<version> cmake/scripts/codegen/requirements.txt
 #
+# Then install the updated packages:
+#   pip install --require-hashes -r cmake/scripts/codegen/requirements.txt
+#
 # If pip install fails because a transitive dependency is missing hashes,
 # use hashin to pin that dependency with hashes here as well:
 #   hashin <dependency> cmake/scripts/codegen/requirements.txt