diff --git a/default.nix b/default.nix
index cac82bf0..17b96349 100644
--- a/default.nix
+++ b/default.nix
@@ -10,7 +10,7 @@
     inherit nixpkgs pkgs; release = false;
     defaultCrateOverrides = pkgs.defaultCrateOverrides // {
       stackable-cockpit-web = attrs: {
-        nativeBuildInputs = [ pkgs.nodePackages.yarn pkgs.nodejs ];
+        nativeBuildInputs = [ pkgs.nodePackages.yarn pkgs.nodejs_20 ];
         preConfigure =
           ''
             [[ ! -e node_modules ]] || rm -r node_modules
@@ -69,7 +69,7 @@
         done
       '';
   }
-, js2nix ? pkgs.callPackage sources.js2nix { nodejs = pkgs.nodejs-18_x; }
+, js2nix ? pkgs.callPackage sources.js2nix { nodejs = pkgs.nodejs_20; }
 , gomod2nix ? pkgs.callPackage sources.gomod2nix {}
 }:
 rec {
diff --git a/nix/sources.json b/nix/sources.json
index b1071336..36b4714b 100644
--- a/nix/sources.json
+++ b/nix/sources.json
@@ -42,10 +42,10 @@
         "homepage": "",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "a04d33c0c3f1a59a2c1cb0c6e34cd24500e5a1dc",
-        "sha256": "0ha2a6j3y4dbclcw7s6p473fcrzxhn4yap4wbm8s4jg7v6wal0ph",
+        "rev": "5929de975bcf4c7c8d8b5ca65c8cd9ef9e44523e",
+        "sha256": "0ngai9c0z9ail3w2zwkriby2nckw4shmb8cln1i569a2g5ya0y84",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/a04d33c0c3f1a59a2c1cb0c6e34cd24500e5a1dc.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/5929de975bcf4c7c8d8b5ca65c8cd9ef9e44523e.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     }
 }
diff --git a/rust/stackablectl/CHANGELOG.md b/rust/stackablectl/CHANGELOG.md
index aa4c6fce..2cdceca1 100644
--- a/rust/stackablectl/CHANGELOG.md
+++ b/rust/stackablectl/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+### Fixed
+
+- nix: Update nixpkgs and upgrade nodejs-18 to nodejs_20 ([#384]).
+
+[#384]: https://github.com/stackabletech/stackable-cockpit/pull/384
+
 ## [1.0.0] - 2025-06-02
 
 ### Added