diff --git a/repl/etc/agpl-header.txt b/repl/etc/agpl-header.txt
new file mode 100644
index 00000000..7256f033
--- /dev/null
+++ b/repl/etc/agpl-header.txt
@@ -0,0 +1,23 @@
+/* 
+
+Strudel - javascript-based environment for live coding algorithmic (musical) patterns
+https://strudel.tidalcycles.org / https://github.com/tidalcycles/strudel/
+
+Copyright (C) Strudel contributors 
+https://github.com/tidalcycles/strudel/graphs/contributors
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+*/
+
diff --git a/repl/package.json b/repl/package.json
index 6b8be459..5db12a06 100644
--- a/repl/package.json
+++ b/repl/package.json
@@ -22,12 +22,13 @@
   },
   "scripts": {
     "start": "react-scripts start",
-    "build": "BUILD_PATH='../docs' react-scripts build && npm run build-tutorial",
+    "build": "BUILD_PATH='../docs' react-scripts build && npm run build-tutorial && npm add-license",
     "test": "mocha ./src/test --colors",
     "snapshot": "cd ./src/ && rm -f ./tunes.snapshot.mjs && node ./shoot.mjs > ./tunes.snapshot.mjs",
     "eject": "react-scripts eject",
     "tutorial": "parcel src/tutorial/index.html --no-cache",
     "build-tutorial": "rm -rf ../docs/tutorial && parcel build src/tutorial/index.html --dist-dir ../docs/tutorial --public-url /tutorial --no-scope-hoist --no-cache",
+    "add-license": "cat etc/agpl-header.txt ../docs/static/js/*LICENSE.txt > /tmp/strudel-license.txt && cp /tmp/strudel-license.txt ../docs/static/js/*LICENSE.txt",
     "predeploy": "npm run build",
     "deploy": "gh-pages -d ../docs",
     "static": "npx serve ../docs"