diff --git a/docs/module_metadata.json b/docs/module_metadata.json
index 7a56f3876f..5a1f5f1dbe 100644
--- a/docs/module_metadata.json
+++ b/docs/module_metadata.json
@@ -387,6 +387,14 @@
       "C++17"
     ]
   },
+  "pw_preprocessor": {
+    "tagline": "Helpful preprocessor macros",
+    "status": "stable",
+    "languages": [
+      "C",
+      "C++"
+    ]
+  },
   "pw_presubmit": {
     "tagline": "Python tools for running presubmit checks and linters",
     "status": "stable",
diff --git a/pw_preprocessor/docs.rst b/pw_preprocessor/docs.rst
index 174de65a07..eab8aaba55 100644
--- a/pw_preprocessor/docs.rst
+++ b/pw_preprocessor/docs.rst
@@ -3,6 +3,9 @@
 ---------------
 pw_preprocessor
 ---------------
+.. pigweed-module::
+   :name: pw_preprocessor
+
 The preprocessor module provides various helpful preprocessor macros.
 
 Compatibility