diff --git a/pkgs/by-name/ma/mainsail/package.nix b/pkgs/by-name/ma/mainsail/package.nix
index 36a2ace37bb2..020d336e30de 100644
--- a/pkgs/by-name/ma/mainsail/package.nix
+++ b/pkgs/by-name/ma/mainsail/package.nix
@@ -2,6 +2,7 @@
   lib,
   buildNpmPackage,
   fetchFromGitHub,
+  nodejs_20,
 }:
 
 buildNpmPackage rec {
@@ -17,6 +18,8 @@ buildNpmPackage rec {
 
   npmDepsHash = "sha256-8rUhDo1l0oLENWwy56UzwlSGIBJtTPsH6w5OX8tnp6U=";
 
+  nodejs = nodejs_20;
+
   # Prevent Cypress binary download.
   CYPRESS_INSTALL_BINARY = 0;