diff --git a/package-lock.json b/package-lock.json
index 73394bf830..10e6e647a8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -60,7 +60,7 @@
                 "postcss-less": "^6.0.0",
                 "postcss-loader": "^8.2.0",
                 "prettier": "^3.8.3",
-                "prettier-plugin-svelte": "^3.4.1",
+                "prettier-plugin-svelte": "^4.1.1",
                 "rollup-plugin-postcss": "^4.0.2",
                 "sinon": "^21.0.1",
                 "storybook": "^10.4.0",
@@ -12100,12 +12100,17 @@
             }
         },
         "node_modules/prettier-plugin-svelte": {
-            "version": "3.4.1",
+            "version": "4.1.1",
+            "resolved": "https://registry.npmjs.org/prettier-plugin-svelte/-/prettier-plugin-svelte-4.1.1.tgz",
+            "integrity": "sha512-wXvbXMjSvb4C9ENWTHXyd+ihakKCsJ6rJhLP6/8HFNj4GkZr48jqL9PoKsl2sk7SyCZRTnJ7O2TTowUpOxP/KA==",
             "dev": true,
             "license": "MIT",
+            "engines": {
+                "node": ">=20"
+            },
             "peerDependencies": {
                 "prettier": "^3.0.0",
-                "svelte": "^3.2.0 || ^4.0.0-next.0 || ^5.0.0-next.0"
+                "svelte": "^5.0.0"
             }
         },
         "node_modules/pretty-format": {
@@ -17500,7 +17505,7 @@
                 "highlight.js": "^11.11.1",
                 "mdsvex": "^0.12.3",
                 "prettier": "^3.8.3",
-                "prettier-plugin-svelte": "^3.4.0",
+                "prettier-plugin-svelte": "^4.1.1",
                 "svelte": "^5.55.9",
                 "svelte-check": "^4.3.5",
                 "typescript": "^5.9.3",
diff --git a/package.json b/package.json
index 14b42887bc..afb08a678a 100644
--- a/package.json
+++ b/package.json
@@ -70,7 +70,7 @@
         "postcss-less": "^6.0.0",
         "postcss-loader": "^8.2.0",
         "prettier": "^3.8.3",
-        "prettier-plugin-svelte": "^3.4.1",
+        "prettier-plugin-svelte": "^4.1.1",
         "rollup-plugin-postcss": "^4.0.2",
         "sinon": "^21.0.1",
         "storybook": "^10.4.0",
diff --git a/packages/stacks-email/package.json b/packages/stacks-email/package.json
index bdd0ae415e..e468795d04 100644
--- a/packages/stacks-email/package.json
+++ b/packages/stacks-email/package.json
@@ -48,7 +48,7 @@
         "highlight.js": "^11.11.1",
         "mdsvex": "^0.12.3",
         "prettier": "^3.8.3",
-        "prettier-plugin-svelte": "^3.4.0",
+        "prettier-plugin-svelte": "^4.1.1",
         "svelte": "^5.55.9",
         "svelte-check": "^4.3.5",
         "typescript": "^5.9.3",