diff --git a/package.json b/package.json
index 431eb2c..e7ef577 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "dependencies": {
     "esbuild": "^0.21.4",
     "govuk-frontend": "^5.3.0",
-    "sass": "^1.75.0"
+    "sass": "^1.77.4"
   },
   "scripts": {
     "build:css": "sass ./app/assets/stylesheets/main.scss:./app/assets/builds/main.css --no-source-map --load-path=node_modules --quiet-deps",
diff --git a/yarn.lock b/yarn.lock
index fbace1e..d9175b2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -261,10 +261,10 @@ readdirp@~3.6.0:
   dependencies:
     picomatch "^2.2.1"
 
-sass@^1.75.0:
-  version "1.75.0"
-  resolved "https://registry.yarnpkg.com/sass/-/sass-1.75.0.tgz#91bbe87fb02dfcc34e052ddd6ab80f60d392be6c"
-  integrity sha512-ShMYi3WkrDWxExyxSZPst4/okE9ts46xZmJDSawJQrnte7M1V9fScVB+uNXOVKRBt0PggHOwoZcn8mYX4trnBw==
+sass@^1.77.4:
+  version "1.77.4"
+  resolved "https://registry.yarnpkg.com/sass/-/sass-1.77.4.tgz#92059c7bfc56b827c56eb116778d157ec017a5cd"
+  integrity sha512-vcF3Ckow6g939GMA4PeU7b2K/9FALXk2KF9J87txdHzXbUF9XRQRwSxcAs/fGaTnJeBFd7UoV22j3lzMLdM0Pw==
   dependencies:
     chokidar ">=3.0.0 <4.0.0"
     immutable "^4.0.0"