diff --git a/extensions/roc-plugin-repo/src/actions/runScript.js b/extensions/roc-plugin-repo/src/actions/runScript.js
index 9f7a719..ad21495 100644
--- a/extensions/roc-plugin-repo/src/actions/runScript.js
+++ b/extensions/roc-plugin-repo/src/actions/runScript.js
@@ -13,6 +13,13 @@ export default ({ context }) => (script, projects, extra) => () => {
     return lazyRequire('./publish')(context, projects, extra);
   } else if (script === 'test') {
     return lazyRequire('./test')(context, projects, extra);
+  } else if (script === 'watch') {
+    return lazyRequire('./build')(context, projects, {
+      ...extra,
+      options: {
+        watch: true,
+      },
+    });
   }
 
   return [];
diff --git a/extensions/roc-plugin-repo/src/commands/watch.js b/extensions/roc-plugin-repo/src/commands/watch.js
new file mode 100644
index 0000000..c39c701
--- /dev/null
+++ b/extensions/roc-plugin-repo/src/commands/watch.js
@@ -0,0 +1,14 @@
+import scriptRunner from './utils/scriptRunner';
+
+export default projects => ({
+  arguments: { managed: { projects: selectedProjects } },
+  options: { managed: { concurrent } },
+  context,
+}) => {
+  const settings = context.config.settings.repo;
+  const selected = projects.filter(
+    ({ name }) => !selectedProjects || selectedProjects.includes(name),
+  );
+
+  return scriptRunner('watch')(selected, settings, concurrent);
+};
diff --git a/extensions/roc-plugin-repo/src/index.js b/extensions/roc-plugin-repo/src/index.js
index 62da743..4b790d8 100644
--- a/extensions/roc-plugin-repo/src/index.js
+++ b/extensions/roc-plugin-repo/src/index.js
@@ -604,6 +604,27 @@ module.exports.roc = {
         },
         options: jestOptions,
       },
+      watch: {
+        command: args => fetchProjects(lazyRequire('./commands/watch'))(args),
+        description: 'Build projects in watch mode',
+        settings: true,
+        arguments: {
+          projects: {
+            validator: validators.isArray(validators.isString),
+            description: 'Projects to use',
+          },
+        },
+        options: {
+          concurrent: {
+            validator: validators.oneOf(
+              validators.isBoolean,
+              validators.isInteger,
+            ),
+            description: 'Run concurrently',
+            default: 2,
+          },
+        },
+      },
     },
   },
 };