diff --git a/README.md b/README.md
index 2b50643..28dcb1f 100644
--- a/README.md
+++ b/README.md
@@ -272,7 +272,7 @@ To compile the project on Ubuntu Linux, run the following commands in terminal:
 
 ```bash
 cd pseudocode.js/
-make setup
+npm install
 make
 ```
 
diff --git a/package.json b/package.json
index dc9ae62..0946925 100644
--- a/package.json
+++ b/package.json
@@ -21,10 +21,12 @@
     "devDependencies": {
         "browserify": "^13.3.0",
         "clean-css-cli": "^4.0.0",
-        "eslint": "^7.0.0",
+        "eslint": "^7.32.0",
         "katex": "^0.8.0",
         "uglify-js": "^3.6.0",
-        "watchify": "^3.9.0"
+        "watchify": "^3.11.1",
+        "clean-css": "^5.2.4",
+        "uglifyjs": "^2.4.11"
     },
     "license": "MIT"
 }
diff --git a/pseudocode.js b/pseudocode.js
index 5e467d0..d7bb00e 100644
--- a/pseudocode.js
+++ b/pseudocode.js
@@ -60,8 +60,10 @@ module.exports = {
         var newElem = renderer.toDOM();
         elem.replaceWith(newElem);
 
-        if (renderer.backend.name === 'mathjax') {
-            mathjaxTypeset(newElem);
+        if (renderer.backend) {
+            if (renderer.backend.name === 'mathjax') {
+                mathjaxTypeset(newElem);
+            }
         }
     },
 };