diff --git a/lisp/calc/.arch-inventory b/lisp/calc/.arch-inventory
new file mode 100644
index 00000000000..e4e8f8239ce
--- /dev/null
+++ b/lisp/calc/.arch-inventory
@@ -0,0 +1,4 @@
+# Auto-generated lisp files, which ignore
+precious ^(.*-loaddefs)\.el$
+
+# arch-tag: 5258f69e-459b-449b-bdd7-bdbd5f948cb9
diff --git a/lisp/calendar/.arch-inventory b/lisp/calendar/.arch-inventory
new file mode 100644
index 00000000000..c70974836a5
--- /dev/null
+++ b/lisp/calendar/.arch-inventory
@@ -0,0 +1,4 @@
+# Auto-generated lisp files, which ignore
+precious ^(.*-loaddefs)\.el$
+
+# arch-tag: 6246cac0-cd69-4d59-8677-c1451a4d5831