diff --git a/out/PiPer-safari-legacy.safariextz b/out/PiPer-safari-legacy.safariextz
index 8f7a944..524107a 100644
Binary files a/out/PiPer-safari-legacy.safariextz and b/out/PiPer-safari-legacy.safariextz differ
diff --git a/src/common/scripts/button.js b/src/common/scripts/button.js
index 538e859..6e555a8 100644
--- a/src/common/scripts/button.js
+++ b/src/common/scripts/button.js
@@ -30,17 +30,17 @@ export const addButton = function(parent) {
     // Add scaled SVG image to button
     const image = /** @type {HTMLImageElement} */ (document.createElement('img'));
     const buttonImage = getResource().buttonImage || 'default';
-    image.src = getExtensionURL('images/' + buttonImage + '.svg');
+    image.src = getExtensionURL(`images/${buttonImage}.svg`);
     image.style.width = image.style.height = '100%';
     const buttonScale = getResource().buttonScale;
-    if (buttonScale) image.style.transform = 'scale(' + buttonScale + ')';
+    if (buttonScale) image.style.transform = `scale(${buttonScale})`;
     button.appendChild(image);
 
     // Add hover style to button (a nested stylesheet is used to avoid tracking another element)
     const buttonHoverStyle = getResource().buttonHoverStyle;
     if (buttonHoverStyle) {
       const style = document.createElement('style');
-      const css = '#' + BUTTON_ID + ':hover{' + buttonHoverStyle + '}';
+      const css = `#${BUTTON_ID}:hover{${buttonHoverStyle}}`;
       style.appendChild(document.createTextNode(css));
       button.appendChild(style);
     }
@@ -83,4 +83,4 @@ export const getButton = function() {
  */
 export const checkButton = function() {
   return !!document.getElementById(BUTTON_ID);
-};
\ No newline at end of file
+};
diff --git a/src/common/scripts/captions.js b/src/common/scripts/captions.js
index 006bb71..b52551e 100644
--- a/src/common/scripts/captions.js
+++ b/src/common/scripts/captions.js
@@ -101,7 +101,7 @@ export const videoPresentationModeChanged = function(event) {
   lastUnprocessedCaption = '';
   processCaptions();
 
-  info('Video presentation mode changed (showingCaptions: ' + showingCaptions + ')');
+  info(`Video presentation mode changed (showingCaptions: ${showingCaptions})`);
 };
 
 /**
@@ -131,7 +131,7 @@ const removeCaptions = function(video, workaround = true) {
  */
 const addCaption = function(video, caption) {
 
-  info('Showing caption "' + caption + '"');
+  info(`Showing caption '${caption}'`);
   track.addCue(new VTTCue(video.currentTime, video.currentTime + 60, caption));
 
   showingEmptyCaption = false;
@@ -175,9 +175,9 @@ export const processCaptions = function() {
     if (segment) {
       const style = window.getComputedStyle(walk.currentNode.parentElement);
       if (style.fontStyle == 'italic') {
-        caption += '<i>' + segment + '</i>';
+        caption += `<i>${segment}</i>`;
       } else if (style.textDecoration == 'underline') {
-        caption += '<u>' + segment + '</u>';
+        caption += `<u>${segment}</u>`;
       } else {
         caption += segment;
       }
diff --git a/src/common/scripts/main.js b/src/common/scripts/main.js
index dd121f7..6dca360 100644
--- a/src/common/scripts/main.js
+++ b/src/common/scripts/main.js
@@ -29,7 +29,7 @@ const mutationObserver = function() {
 const domainName = location.hostname && location.hostname.match(/([^.]+)\.(?:co\.)?[^.]+$/)[1];
 
 if (domainName in resources) {
-  info('Matched site ' + domainName + ' (' + location + ')');
+  info(`Matched site ${domainName} (${location})`);
   setResource(resources[domainName]);
 
   initialiseCaches();
diff --git a/src/safari-legacy/update.plist b/src/safari-legacy/update.plist
index 3f8a444..ea6109b 100644
--- a/src/safari-legacy/update.plist
+++ b/src/safari-legacy/update.plist
@@ -10,7 +10,7 @@
 			<key>CFBundleShortVersionString</key>
 			<string></string>
 			<key>CFBundleVersion</key>
-			<string>170</string>
+			<string>171</string>
 			<key>Developer Identifier</key>
 			<string>BQ6Q24MF9X</string>
 			<key>URL</key>