diff --git a/.eslintrc.yml b/.eslintrc.yml
index a7b620b8..36db78a8 100644
--- a/.eslintrc.yml
+++ b/.eslintrc.yml
@@ -20,4 +20,9 @@ rules:
   strict:
     - 2
     - global
-  guard-for-in: 0
+  guard-for-in: 1
+  no-param-reassign:
+    - 2
+    - props: false
+  arrow-body-style: 1
+  max-len: 1
diff --git a/package.json b/package.json
index 609731bb..0be3bf03 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   "devDependencies": {
     "bower": "^1.7.1",
     "eslint": "^1.10.3",
-    "eslint-config-airbnb": "^2.0.0",
+    "eslint-config-airbnb": "^4.0.0",
     "fs-extra": "^0.26.2",
     "grunt": "^0.4.5",
     "grunt-cli": "^0.1.13",
diff --git a/scripts/archive.js b/scripts/archive.js
index 1dadfee4..c0d9974b 100644
--- a/scripts/archive.js
+++ b/scripts/archive.js
@@ -41,7 +41,7 @@ function compress(sourcePath, destPath) {
     'a',
     '-r',
     destPath,
-    '.' + path.sep + path.join(sourcePath, '*'),
+    path.join('.', sourcePath, '*'),
   ]);
 }
 
@@ -192,13 +192,22 @@ vulcanize(rootPath);
 const releasePaths = helpers.getAppReleasePaths(rootPath);
 for (let i = 0; i < releasePaths.length; ++i) {
   if (releasePaths[i].label) {
-    createAppArchive(rootPath, releasePaths[i].path, tempPath, path.join(rootPath, 'build', 'LOOT ' + gitDesc + ' (' + releasePaths[i].label + ').7z'));
+    const filename = `LOOT ${gitDesc} (${releasePaths[i].label}).7z`;
+    createAppArchive(rootPath,
+                     releasePaths[i].path,
+                     tempPath,
+                     path.join(rootPath, 'build', filename));
   } else {
-    createAppArchive(releasePaths[i].path, path.join(rootPath, 'build', 'LOOT ' + gitDesc + '.7z'));
+    createAppArchive(releasePaths[i].path,
+                     path.join(rootPath, 'build', `LOOT ${gitDesc}.7z`));
   }
 }
 
 const binaryPaths = helpers.getApiBinaryPaths(rootPath);
 for (let i = 0; i < binaryPaths.length; ++i) {
-  createApiArchive(rootPath, binaryPaths[i].path, tempPath, path.join(rootPath, 'build', 'LOOT API ' + gitDesc + ' (' + binaryPaths[i].label + ').7z'));
+  const filename = `LOOT API ${gitDesc} (${binaryPaths[i].label}).7z`;
+  createApiArchive(rootPath,
+                   binaryPaths[i].path,
+                   tempPath,
+                   path.join(rootPath, 'build', filename));
 }
diff --git a/scripts/vulcanize.js b/scripts/vulcanize.js
index af00c399..f8965284 100755
--- a/scripts/vulcanize.js
+++ b/scripts/vulcanize.js
@@ -40,4 +40,4 @@ helpers.getAppReleasePaths(rootPath).forEach((releasePath) => {
     output: path.join(outputPath, 'index.html'),
     input: path.join(rootPath, 'src', 'gui', 'html', 'index.html'),
   }, runVulcanize);
-})
+});
diff --git a/src/gui/html/js/dom.js b/src/gui/html/js/dom.js
index 7e754b30..5f8c2475 100644
--- a/src/gui/html/js/dom.js
+++ b/src/gui/html/js/dom.js
@@ -13,9 +13,9 @@
     getElementInTableRowTemplate(rowTemplateId, elementClass) {
       const select = document.querySelector('link[rel="import"][href$="editable-table.html"]');
       if (select) {
-        return select.import.querySelector('#' + rowTemplateId).content.querySelector('.' + elementClass);
+        return select.import.querySelector(`#${rowTemplateId}`).content.querySelector(`.${elementClass}`);
       }
-      return document.querySelector('#' + rowTemplateId).content.querySelector('.' + elementClass);
+      return document.querySelector(`#${rowTemplateId}`).content.querySelector(`.${elementClass}`);
     },
 
     show(elementId) {
@@ -34,7 +34,9 @@
       for (let i = 0; i < table.tBodies[0].rows.length; ++i) {
         const folderElements = table.tBodies[0].rows[i].getElementsByClassName('folder');
         if (folderElements.length === 1) {
-          table.setReadOnly(table.tBodies[0].rows[i], ['delete'], folderElements[0].value === gameFolder);
+          table.setReadOnly(table.tBodies[0].rows[i],
+                            ['delete'],
+                            folderElements[0].value === gameFolder);
         }
       }
     },
diff --git a/src/gui/html/js/filters.js b/src/gui/html/js/filters.js
index 7f229173..2581f046 100644
--- a/src/gui/html/js/filters.js
+++ b/src/gui/html/js/filters.js
@@ -33,15 +33,18 @@
           return false;
         }
 
-        if (this.conflictingPluginNames.length !== 0 && this.conflictingPluginNames.indexOf(plugin.name) === -1) {
+        if (this.conflictingPluginNames.length !== 0
+            && this.conflictingPluginNames.indexOf(plugin.name) === -1) {
           return false;
         }
 
-        if (this.hideMessagelessPlugins && plugin.getCardContent(this).messages.length === 0) {
+        if (this.hideMessagelessPlugins
+            && plugin.getCardContent(this).messages.length === 0) {
           return false;
         }
 
-        if (this.contentSearchString.length !== 0 && !plugin.getCardContent(this).containsText(this.contentSearchString)) {
+        if (this.contentSearchString.length !== 0
+            && !plugin.getCardContent(this).containsText(this.contentSearchString)) {
           return false;
         }
 
@@ -57,7 +60,8 @@
           return false;
         }
 
-        if (this.hideDoNotCleanMessages && message.content.toLowerCase().indexOf(this._doNotCleanString) !== -1) {
+        if (this.hideDoNotCleanMessages
+            && message.content.toLowerCase().indexOf(this._doNotCleanString) !== -1) {
           return false;
         }
 
diff --git a/src/gui/html/js/plugin.js b/src/gui/html/js/plugin.js
index 835fae65..72a3f8b5 100644
--- a/src/gui/html/js/plugin.js
+++ b/src/gui/html/js/plugin.js
@@ -99,7 +99,7 @@
       }
 
       /* Pad CRC string to 8 characters. */
-      return ('00000000' + this._crc.toString(16).toUpperCase()).slice(-8);
+      return (`00000000${this._crc.toString(16).toUpperCase()}`).slice(-8);
     }
 
     get tags() {
diff --git a/src/gui/html/js/query.js b/src/gui/html/js/query.js
index 8c5c7696..a5be1158 100644
--- a/src/gui/html/js/query.js
+++ b/src/gui/html/js/query.js
@@ -28,7 +28,7 @@
         persistent: false,
         onSuccess: resolve,
         onFailure: (errorCode, errorMessage) => {
-          reject(new Error('Error code: ' + errorCode + '; ' + errorMessage));
+          reject(new Error(`Error code: ${errorCode}; ${errorMessage}`));
         },
       });
     });
diff --git a/src/gui/html/js/translator.js b/src/gui/html/js/translator.js
index 60720c77..1bffcfc5 100644
--- a/src/gui/html/js/translator.js
+++ b/src/gui/html/js/translator.js
@@ -3,7 +3,9 @@
 (function exportModule(root, factory) {
   if (typeof define === 'function' && define.amd) {
     // AMD. Register as an anonymous module.
-    define(['bower_components/Jed/jed', 'bower_components/jed-gettext-parser/jedGettextParser'], factory);
+    define(['bower_components/Jed/jed',
+           'bower_components/jed-gettext-parser/jedGettextParser'],
+           factory);
   } else {
     // Browser globals
     root.loot = root.loot || {};
@@ -19,11 +21,11 @@
 
     load() {
       const defaultTranslationData = {
-        'messages': {
+        messages: {
           '': {
-            'domain': 'messages',
-            'lang': 'en',
-            'plural_forms': 'nplurals=2; plural=(n != 1);',
+            domain: 'messages',
+            lang: 'en',
+            plural_forms: 'nplurals=2; plural=(n != 1);',
           },
         },
       };
@@ -34,7 +36,7 @@
         translationDataPromise = Promise.resolve(defaultTranslationData);
       } else {
         translationDataPromise = new Promise((resolve, reject) => {
-          const url = 'loot://l10n/' + this.locale + '/LC_MESSAGES/loot.mo';
+          const url = `loot://l10n/${this.locale}/LC_MESSAGES/loot.mo`;
           const xhr = new XMLHttpRequest();
           xhr.open('GET', url);
           xhr.responseType = 'arraybuffer';
@@ -53,12 +55,12 @@
       }
 
       return translationDataPromise.catch((error) => {
-        console.log('Error loading translation data: ' + error.message); // eslint-disable-line no-console
+        console.log(`Error loading translation data: ${error.message}`); // eslint-disable-line no-console
         return defaultTranslationData;
       }).then((result) => {
         this.jed = new Jed({
-          'locale_data': result,
-          'domain': 'messages',
+          locale_data: result,
+          domain: 'messages',
         });
       });
     }