diff --git a/package.json b/package.json
index 7382e2c..48dd07a 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "dependencies": {
     "esbuild": "^0.20.2",
     "govuk-frontend": "5.4.0",
-    "sass": "^1.72.0",
+    "sass": "^1.78.0",
     "yarn": "^1.22.21"
   },
   "scripts": {
diff --git a/yarn.lock b/yarn.lock
index b8e1874..a71d917 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -261,10 +261,10 @@ readdirp@~3.6.0:
   dependencies:
     picomatch "^2.2.1"
 
-sass@^1.72.0:
-  version "1.72.0"
-  resolved "https://registry.yarnpkg.com/sass/-/sass-1.72.0.tgz#5b9978943fcfb32b25a6a5acb102fc9dabbbf41c"
-  integrity sha512-Gpczt3WA56Ly0Mn8Sl21Vj94s1axi9hDIzDFn9Ph9x3C3p4nNyvsqJoQyVXKou6cBlfFWEgRW4rT8Tb4i3XnVA==
+sass@^1.78.0:
+  version "1.78.0"
+  resolved "https://registry.yarnpkg.com/sass/-/sass-1.78.0.tgz#cef369b2f9dc21ea1d2cf22c979f52365da60841"
+  integrity sha512-AaIqGSrjo5lA2Yg7RvFZrlXDBCp3nV4XP73GrLGvdRWWwk+8H3l0SDvq/5bA4eF+0RFPLuWUk3E+P1U/YqnpsQ==
   dependencies:
     chokidar ">=3.0.0 <4.0.0"
     immutable "^4.0.0"