diff --git a/gulpfile.babel.js b/gulpfile.babel.js
index 58acfe2..8966eb6 100644
--- a/gulpfile.babel.js
+++ b/gulpfile.babel.js
@@ -49,6 +49,9 @@ webpackConfig.forEach((c) => {
       }))
     }
   }
+  c.plugins.push(new webpack.DefinePlugin({
+    FIMFIC2EPUB_VERSION: JSON.stringify(require('./package.json').version)
+  }))
 })
 
 const wpCompiler = webpack(webpackConfig)
diff --git a/package.json b/package.json
index c80afec..657e9aa 100644
--- a/package.json
+++ b/package.json
@@ -63,6 +63,7 @@
   "standard": {
     "env": {
       "browser": true
-    }
+    },
+    "globals": ["FIMFIC2EPUB_VERSION"]
   }
 }
diff --git a/src/FimFic2Epub.js b/src/FimFic2Epub.js
index 6217faf..b1a803f 100644
--- a/src/FimFic2Epub.js
+++ b/src/FimFic2Epub.js
@@ -36,14 +36,14 @@ module.exports = class FimFic2Epub {
     return sanitize(storyInfo.title + ' by ' + storyInfo.author.name + '.epub')
   }
 
-  static fetchStoryInfo (storyId) {
+  static fetchStoryInfo (storyId, raw = false) {
     return new Promise((resolve, reject) => {
       storyId = FimFic2Epub.getStoryId(storyId)
       let url = 'https://www.fimfiction.net/api/story.php?story=' + storyId
-      fetchRemote(url, (raw, type) => {
+      fetchRemote(url, (content, type) => {
         let data
         try {
-          data = JSON.parse(raw)
+          data = JSON.parse(content)
         } catch (e) {}
         if (!data) {
           reject('Unable to fetch story info')
@@ -54,6 +54,10 @@ module.exports = class FimFic2Epub {
           return
         }
         let story = data.story
+        if (raw) {
+          resolve(story)
+          return
+        }
         // this is so the metadata can be cached.
         if (!story.chapters) story.chapters = []
         delete story.likes
@@ -64,7 +68,9 @@ module.exports = class FimFic2Epub {
         story.chapters.forEach((ch) => {
           delete ch.views
         })
-        resolve(data.story)
+        // Add version number
+        story.FIMFIC2EPUB_VERSION = FIMFIC2EPUB_VERSION
+        resolve(story)
       })
     })
   }
diff --git a/src/templates.js b/src/templates.js
index 722cf9e..57167e1 100644
--- a/src/templates.js
+++ b/src/templates.js
@@ -116,10 +116,11 @@ export function createOpf (ffc) {
         m('dc:source', ffc.storyInfo.url),
         m('dc:language', 'en'),
         m('meta', {name: 'cover', content: 'cover'}),
-        m('meta', {property: 'dcterms:modified'}, new Date(ffc.storyInfo.date_modified * 1000).toISOString().replace('.000', ''))
+        m('meta', {property: 'dcterms:modified'}, new Date(ffc.storyInfo.date_modified * 1000).toISOString().replace('.000', '')),
+        m('dc:subject', 'Fimfiction')
       ].concat(ffc.categories.map((tag) =>
         m('dc:subject', tag.name)
-      ))),
+      ), m('meta', {name: 'fimfic2epub version', content: FIMFIC2EPUB_VERSION}))),
 
       m('manifest', [
         m('item', {id: 'ncx', href: 'toc.ncx', 'media-type': 'application/x-dtbncx+xml'}),