diff --git a/README.md b/README.md
index b056bcc..53992d9 100644
--- a/README.md
+++ b/README.md
@@ -2065,10 +2065,17 @@ a message that says so; none is passed over in silence:
 
 ### Coming from 4.0
 
-Nothing of the language has changed. 4.0.1 builds a script with a long list known when it
-is built, such as a video played in the fog: 4.0.0 refused one of more than 16,384 values
-wider than six bits ("arrays and stacks of … cells, past the 65536"), and now reads it
-where it is in the map, four bytes a value.
+A 4.0 script builds into the same map. What 4.1 changed:
+
+- **Libraries from other plugins.** A plugin can provide TrigScript modules that a script
+  imports by id (`import { spawnWave } from "waves"`), and the map keeps a copy of each one
+  it imports, so it still builds where that plugin is missing or at another version
+  ([Libraries from other plugins](#libraries-from-other-plugins), [Providing a
+  library](#providing-a-library)). `trigscript.build` is service version 2.
+- **Long lists known when the script is built** are built, such as a video played in the
+  fog: 4.0 refused one of more than 16,384 values wider than six bits ("arrays and stacks
+  of … cells, past the 65536"), and now reads it where it is in the map, four bytes a
+  value.
 
 ### Coming from 3.12
 
diff --git a/package-lock.json b/package-lock.json
index 2d2fd4f..ededc7b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "scmjs-plugin-trigscript",
-  "version": "4.0.1",
+  "version": "4.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "scmjs-plugin-trigscript",
-      "version": "4.0.1",
+      "version": "4.1.0",
       "license": "MIT",
       "devDependencies": {
         "@scm-js/plugin-api": "^1.61.0",
diff --git a/package.json b/package.json
index f6e5c7c..4361714 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "scmjs-plugin-trigscript",
-  "version": "4.0.1",
+  "version": "4.1.0",
   "private": true,
   "description": "TrigScript — TypeScript that builds into triggers; a plugin for the scmJS StarCraft map editor.",
   "author": "Jeany",
diff --git a/plugin.json b/plugin.json
index 6078255..4a0c08f 100644
--- a/plugin.json
+++ b/plugin.json
@@ -1,7 +1,7 @@
 {
   "name": "TrigScript",
   "id": "trigscript",
-  "version": "4.0.1",
+  "version": "4.1.0",
   "description": "TypeScript kept inside the map. Ordinary TypeScript — files, imports, helpers, loops — runs when the script is applied and records one trigger per trigger() call: ordinary triggers that play on every version. Code inside program(() => { … }) runs in the game — variables, loops, functions, sleep — and is built into the map by TrigScript itself when you save; a map with a program needs StarCraft: Remastered. Checked as you type against the map's own names, with a built-in simulator.",
   "author": "Jeany",
   "homepage": "https://github.com/scm-js/plugin-trigscript",
diff --git a/version.ts b/version.ts
index dbad8a5..817d572 100644
--- a/version.ts
+++ b/version.ts
@@ -5,4 +5,4 @@
  * has been compiled into the editor (`compile.ts`). `tests/script.test.ts` keeps this
  * equal to the manifest's.
  */
-export const VERSION = "4.0.1";
+export const VERSION = "4.1.0";