diff --git a/org.lflang/src/lib/ts/package.json b/org.lflang/src/lib/ts/package.json
index 34e171c54d..47dfa5153f 100644
--- a/org.lflang/src/lib/ts/package.json
+++ b/org.lflang/src/lib/ts/package.json
@@ -2,7 +2,7 @@
     "name": "LinguaFrancaDefault",
     "type": "commonjs",
     "dependencies": {
-        "@lf-lang/reactor-ts": "0.3.0",
+        "@lf-lang/reactor-ts": "0.3.1",
         "@babel/cli": "^7.8.4",
         "@babel/core": "^7.8.7",
         "@babel/node": "^7.8.7",
@@ -17,8 +17,12 @@
         "rimraf": "^3.0.2"
     },
     "devDependencies": {
+        "@types/command-line-args": "^5.2.0",
+        "@types/command-line-usage": "^5.0.2",
+        "@types/jest": "^27.0.0",
+        "@types/microtime": "^2.1.0",
+        "@types/node": "^16.3.3",
         "@types/google-protobuf": "^3.7.4",
-        "@types/node": "^13.9.2",
         "@types/uuid": "^8.3.4",
         "@typescript-eslint/eslint-plugin": "5.33.0",
         "@typescript-eslint/parser": "^5.8.1",
diff --git a/test/TypeScript/README.md b/test/TypeScript/README.md
index c2e04e2efd..c865f31894 100644
--- a/test/TypeScript/README.md
+++ b/test/TypeScript/README.md
@@ -9,6 +9,11 @@ To run the tests with an alternative runtime, use the `-Druntime` flag to specif
 ```
 ./gradlew test --tests org.lflang.tests.runtime.TypeScriptTest.* -Druntime="~/lf-lang/reactor-ts"
 ```
+- To point to a branch of a remote repository, use:
+```
+-Druntime="git://github.com/lf-lang/reactor-ts.git#branch-name
+```
+
 - Note that `lfc` can be pointed to an alternative runtime as well, using the `external-runtime-path` switch:
 ```
 lfc test/TypeScript/src/Minimal.lf --external-runtime-path ~/lf-lang/reactor-ts