diff --git a/doc/doc-support/lib-function-docs.nix b/doc/doc-support/lib-function-docs.nix
index 5199b949e7b8..f6d613cac0b6 100644
--- a/doc/doc-support/lib-function-docs.nix
+++ b/doc/doc-support/lib-function-docs.nix
@@ -22,5 +22,6 @@ with pkgs; stdenv.mkDerivation {
     docgen lists 'List manipulation functions'
     docgen debug 'Debugging functions'
     docgen options 'NixOS / nixpkgs option handling'
+    docgen sources 'Source filtering functions'
   '';
 }
diff --git a/doc/functions/library.xml b/doc/functions/library.xml
index 6ffb944b5a60..21bcf5b88c9d 100644
--- a/doc/functions/library.xml
+++ b/doc/functions/library.xml
@@ -25,4 +25,6 @@
  <xi:include href="./library/generated/debug.xml" />
 
  <xi:include href="./library/generated/options.xml" />
+
+ <xi:include href="./library/generated/sources.xml" />
 </section>