diff --git a/package.json b/package.json
index ffc015e2..55bd60f0 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "dependencies": {
     "esbuild": "^0.19.12",
     "govuk-frontend": "^5.0.0",
-    "sass": "^1.69.7"
+    "sass": "^1.70.0"
   },
   "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 2c0c897a..94dd6fdc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -261,10 +261,10 @@ readdirp@~3.6.0:
   dependencies:
     picomatch "^2.2.1"
 
-sass@^1.69.7:
-  version "1.69.7"
-  resolved "https://registry.yarnpkg.com/sass/-/sass-1.69.7.tgz#6e7e1c8f51e8162faec3e9619babc7da780af3b7"
-  integrity sha512-rzj2soDeZ8wtE2egyLXgOOHQvaC2iosZrkF6v3EUG+tBwEvhqUCzm0VP3k9gHF9LXbSrRhT5SksoI56Iw8NPnQ==
+sass@^1.70.0:
+  version "1.70.0"
+  resolved "https://registry.yarnpkg.com/sass/-/sass-1.70.0.tgz#761197419d97b5358cb25f9dd38c176a8a270a75"
+  integrity sha512-uUxNQ3zAHeAx5nRFskBnrWzDUJrrvpCPD5FNAoRvTi0WwremlheES3tg+56PaVtCs5QDRX5CBLxxKMDJMEa1WQ==
   dependencies:
     chokidar ">=3.0.0 <4.0.0"
     immutable "^4.0.0"