diff --git a/pkgs/development/web/nodejs/v18.nix b/pkgs/development/web/nodejs/v18.nix
index bc86d6c89dbd..a4121b9575fd 100644
--- a/pkgs/development/web/nodejs/v18.nix
+++ b/pkgs/development/web/nodejs/v18.nix
@@ -19,6 +19,9 @@ let
 in
 buildNodejs {
   inherit enableNpm;
+  # The change to minor version 18.20.0 breaks compatibility with ffi-napi
+  # This breaks the compilation of some nix packages.
+  # While this is investigated and fixed, do not upgrade the minor version.
   version = "18.19.1";
   sha256 = "sha256-CQ+WouzeCAtrOCxtZCvKXQvkcCp4y1Vb578CsgvRbe0=";
   patches = [