diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index ab5908649..39d595199 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -14,5 +14,12 @@
 /doc @fricklerhandwerk
 *.md @fricklerhandwerk
 
+# Documentation of built-in functions
+src/libexpr/primops.cc @fricklerhandwerk @roberth
+# Documentation on experimental features
+src/libutil/experimental-features.cc @fricklerhandwerk
+# Documentation on configuration settings
+src/libstore/globals.hh @fricklerhandwerk
+
 # Libstore layer
 /src/libstore @thufschmitt