diff --git a/nixos/modules/services/web-apps/peertube.nix b/nixos/modules/services/web-apps/peertube.nix
index 2fe726e61525..c4b0186a77b4 100644
--- a/nixos/modules/services/web-apps/peertube.nix
+++ b/nixos/modules/services/web-apps/peertube.nix
@@ -489,7 +489,7 @@ in
       environment = env;
 
       path = with pkgs; [
-        nodejs_18
+        nodejs_20
         yarn
         ffmpeg-headless
         openssl
@@ -945,7 +945,7 @@ in
       })
       (lib.attrsets.setAttrByPath
         [ cfg.user "packages" ]
-        [ peertubeEnv pkgs.nodejs_18 pkgs.yarn pkgs.ffmpeg-headless ]
+        [ peertubeEnv pkgs.nodejs_20 pkgs.yarn pkgs.ffmpeg-headless ]
       )
       (lib.mkIf cfg.redis.enableUnixSocket {
         ${config.services.peertube.user}.extraGroups = [ "redis-peertube" ];
diff --git a/nixos/modules/services/web-apps/wiki-js.nix b/nixos/modules/services/web-apps/wiki-js.nix
index 4c742c26afad..f313804a6d28 100644
--- a/nixos/modules/services/web-apps/wiki-js.nix
+++ b/nixos/modules/services/web-apps/wiki-js.nix
@@ -151,7 +151,7 @@ in
         WorkingDirectory = "/var/lib/${cfg.stateDirectoryName}";
         DynamicUser = true;
         PrivateTmp = true;
-        ExecStart = "${pkgs.nodejs_18}/bin/node ${pkgs.wiki-js}/server";
+        ExecStart = "${pkgs.nodejs_20}/bin/node ${pkgs.wiki-js}/server";
       };
     };
   };
diff --git a/pkgs/by-name/cl/clever-tools/package.nix b/pkgs/by-name/cl/clever-tools/package.nix
index 4c2b76aa1ca3..d88a71de53cf 100644
--- a/pkgs/by-name/cl/clever-tools/package.nix
+++ b/pkgs/by-name/cl/clever-tools/package.nix
@@ -2,7 +2,7 @@
   lib,
   buildNpmPackage,
   fetchFromGitHub,
-  nodejs_18,
+  nodejs_20,
   installShellFiles,
   makeWrapper,
   stdenv,
@@ -13,7 +13,7 @@ buildNpmPackage rec {
 
   version = "3.12.0";
 
-  nodejs = nodejs_18;
+  nodejs = nodejs_20;
 
   src = fetchFromGitHub {
     owner = "CleverCloud";
diff --git a/pkgs/by-name/db/db-rest/package.nix b/pkgs/by-name/db/db-rest/package.nix
index 6aa4e722d169..761170f118ca 100644
--- a/pkgs/by-name/db/db-rest/package.nix
+++ b/pkgs/by-name/db/db-rest/package.nix
@@ -2,7 +2,7 @@
   lib,
   buildNpmPackage,
   fetchFromGitHub,
-  nodejs_18,
+  nodejs,
   nix-update-script,
   nixosTests,
 }:
@@ -10,7 +10,7 @@ buildNpmPackage rec {
   pname = "db-rest";
   version = "6.1.0";
 
-  nodejs = nodejs_18;
+  inherit nodejs;
 
   src = fetchFromGitHub {
     owner = "derhuerst";
diff --git a/pkgs/by-name/pe/peertube/package.nix b/pkgs/by-name/pe/peertube/package.nix
index 0f99e03bab15..c80bc03c2ef6 100644
--- a/pkgs/by-name/pe/peertube/package.nix
+++ b/pkgs/by-name/pe/peertube/package.nix
@@ -10,7 +10,7 @@
   fixup-yarn-lock,
   jq,
   fd,
-  nodejs_18,
+  nodejs_20,
   which,
   yarn,
 }:
@@ -92,7 +92,7 @@ stdenv.mkDerivation rec {
     fd
   ];
 
-  buildInputs = [ nodejs_18 ];
+  buildInputs = [ nodejs_20 ];
 
   buildPhase = ''
     # Build node modules
diff --git a/pkgs/by-name/pu/pulsar/update.mjs b/pkgs/by-name/pu/pulsar/update.mjs
index 4da49b268d9a..215092faab02 100755
--- a/pkgs/by-name/pu/pulsar/update.mjs
+++ b/pkgs/by-name/pu/pulsar/update.mjs
@@ -1,6 +1,6 @@
 #!/usr/bin/env nix-shell
 /*
-#!nix-shell -i node -p nodejs_18
+#!nix-shell -i node -p nodejs
 */
 
 import { promises as fs } from 'node:fs';
diff --git a/pkgs/by-name/sl/slskd/package.nix b/pkgs/by-name/sl/slskd/package.nix
index c42b98dad505..a5bc3bedfc3c 100644
--- a/pkgs/by-name/sl/slskd/package.nix
+++ b/pkgs/by-name/sl/slskd/package.nix
@@ -6,14 +6,14 @@
   fetchFromGitHub,
   fetchNpmDeps,
   mono,
-  nodejs_18,
+  nodejs_20,
   slskd,
   testers,
   nix-update-script,
 }:
 
 let
-  nodejs = nodejs_18;
+  nodejs = nodejs_20;
   # https://github.com/NixOS/nixpkgs/blob/d88947e91716390bdbefccdf16f7bebcc41436eb/pkgs/build-support/node/build-npm-package/default.nix#L62
   npmHooks = buildPackages.npmHooks.override { inherit nodejs; };
 in
diff --git a/pkgs/development/compilers/elm/default.nix b/pkgs/development/compilers/elm/default.nix
index ae6c36d6bbb8..b27527246372 100644
--- a/pkgs/development/compilers/elm/default.nix
+++ b/pkgs/development/compilers/elm/default.nix
@@ -2,7 +2,7 @@
   pkgs,
   lib,
   makeWrapper,
-  nodejs ? pkgs.nodejs_18,
+  nodejs ? pkgs.nodejs_20,
 }:
 
 let
diff --git a/pkgs/development/compilers/elm/packages/node/node-composition.nix b/pkgs/development/compilers/elm/packages/node/node-composition.nix
index e095e45b97db..a32e52788e8b 100644
--- a/pkgs/development/compilers/elm/packages/node/node-composition.nix
+++ b/pkgs/development/compilers/elm/packages/node/node-composition.nix
@@ -5,7 +5,7 @@
     inherit system;
   },
   system ? builtins.currentSystem,
-  nodejs ? pkgs."nodejs_18",
+  nodejs ? pkgs."nodejs_20",
 }:
 
 let
diff --git a/pkgs/misc/base16-builder/node-packages.nix b/pkgs/misc/base16-builder/node-packages.nix
index 1d9923295c8b..5c07f7cffc9e 100644
--- a/pkgs/misc/base16-builder/node-packages.nix
+++ b/pkgs/misc/base16-builder/node-packages.nix
@@ -5,7 +5,7 @@
     inherit system;
   },
   system ? builtins.currentSystem,
-  nodejs ? pkgs."nodejs_18",
+  nodejs ? pkgs."nodejs_20",
 }:
 
 let
diff --git a/pkgs/tools/admin/meshcentral/default.nix b/pkgs/tools/admin/meshcentral/default.nix
index 97fb348219b4..f9eca2fc6a75 100644
--- a/pkgs/tools/admin/meshcentral/default.nix
+++ b/pkgs/tools/admin/meshcentral/default.nix
@@ -3,7 +3,7 @@
   fetchzip,
   fetchYarnDeps,
   yarn2nix-moretea,
-  nodejs_18,
+  nodejs_20,
   dos2unix,
 }:
 
@@ -37,7 +37,7 @@ yarn2nix-moretea.mkYarnPackage {
   preFixup = ''
     mkdir -p $out/bin
     chmod a+x $out/libexec/meshcentral/deps/meshcentral/meshcentral.js
-    sed -i '1i#!${nodejs_18}/bin/node' $out/libexec/meshcentral/deps/meshcentral/meshcentral.js
+    sed -i '1i#!${nodejs_20}/bin/node' $out/libexec/meshcentral/deps/meshcentral/meshcentral.js
     ln -s $out/libexec/meshcentral/deps/meshcentral/meshcentral.js $out/bin/meshcentral
   '';
 
diff --git a/pkgs/tools/security/onlykey/onlykey.nix b/pkgs/tools/security/onlykey/onlykey.nix
index 1814e4887f8c..c0c0d8eaead8 100644
--- a/pkgs/tools/security/onlykey/onlykey.nix
+++ b/pkgs/tools/security/onlykey/onlykey.nix
@@ -5,7 +5,7 @@
     inherit system;
   },
   system ? builtins.currentSystem,
-  nodejs ? pkgs.nodejs_18,
+  nodejs ? pkgs.nodejs_20,
 }:
 
 let