diff --git a/index.js b/index.js
index 240f2ebf7..cbc0dc718 100644
--- a/index.js
+++ b/index.js
@@ -99,6 +99,11 @@ class ServerlessWebpack {
       'after:deploy:createDeploymentArtifacts': () => BbPromise.bind(this)
         .then(this.cleanup),
 
+      'before:deploy:function:packageFunction': () => BbPromise.bind(this)
+        .then(this.validate)
+        .then(this.compile)
+        .then(this.packExternalModules),
+
       'webpack:validate': () => BbPromise.bind(this)
         .then(this.validate),