diff --git a/package.json b/package.json
index 50b4af2b0f9..a7092e8240e 100644
--- a/package.json
+++ b/package.json
@@ -152,7 +152,7 @@
     "html-differ": "^1.4.0",
     "mocha": "^10.2.0",
     "npm-run-all2": "^6.0.6",
-    "prettier": "^2.8.0",
+    "prettier": "^3.4.2",
     "puppeteer": "^24.1.0",
     "qunit": "^2.19.4",
     "recast": "^0.22.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 089eff1221c..ff1adbb4c4c 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -240,7 +240,7 @@ importers:
         version: 16.6.2(eslint@8.57.0)
       eslint-plugin-prettier:
         specifier: ^4.2.1
-        version: 4.2.1(eslint-config-prettier@9.1.0)(eslint@8.57.0)(prettier@2.8.8)
+        version: 4.2.1(eslint-config-prettier@9.1.0)(eslint@8.57.0)(prettier@3.4.2)
       eslint-plugin-qunit:
         specifier: ^8.0.1
         version: 8.1.1(eslint@8.57.0)
@@ -275,8 +275,8 @@ importers:
         specifier: ^6.0.6
         version: 6.1.2
       prettier:
-        specifier: ^2.8.0
-        version: 2.8.8
+        specifier: ^3.4.2
+        version: 3.4.2
       puppeteer:
         specifier: ^24.1.0
         version: 24.1.0(typescript@5.1.6)
@@ -1800,7 +1800,7 @@ importers:
         version: 11.1.0(eslint@8.57.0)
       eslint-plugin-prettier:
         specifier: ^5.1.3
-        version: 5.1.3(eslint-config-prettier@9.1.0)(eslint@8.57.0)(prettier@3.2.5)
+        version: 5.1.3(eslint-config-prettier@9.1.0)(eslint@8.57.0)(prettier@3.4.2)
       eslint-plugin-qunit:
         specifier: ^8.1.1
         version: 8.1.1(eslint@8.57.0)
@@ -1811,8 +1811,8 @@ importers:
         specifier: ^4.1.5
         version: 4.1.5
       prettier:
-        specifier: ^3.2.5
-        version: 3.2.5
+        specifier: ^3.4.2
+        version: 3.4.2
       qunit:
         specifier: ^2.19.2
         version: 2.20.1
@@ -11840,7 +11840,7 @@ packages:
       semver: 6.3.1
     dev: true
 
-  /eslint-plugin-prettier@4.2.1(eslint-config-prettier@9.1.0)(eslint@8.57.0)(prettier@2.8.8):
+  /eslint-plugin-prettier@4.2.1(eslint-config-prettier@9.1.0)(eslint@8.57.0)(prettier@3.4.2):
     resolution: {integrity: sha512-f/0rXLXUt0oFYs8ra4w49wYZBG5GKZpAYsJSm6rnYL5uVDjd+zowwMwVZHnAjf4edNrKpCDYfXDgmRE/Ak7QyQ==}
     engines: {node: '>=12.0.0'}
     peerDependencies:
@@ -11853,11 +11853,11 @@ packages:
     dependencies:
       eslint: 8.57.0
       eslint-config-prettier: 9.1.0(eslint@8.57.0)
-      prettier: 2.8.8
+      prettier: 3.4.2
       prettier-linter-helpers: 1.0.0
     dev: true
 
-  /eslint-plugin-prettier@5.1.3(eslint-config-prettier@9.1.0)(eslint@8.57.0)(prettier@3.2.5):
+  /eslint-plugin-prettier@5.1.3(eslint-config-prettier@9.1.0)(eslint@8.57.0)(prettier@3.4.2):
     resolution: {integrity: sha512-C9GCVAs4Eq7ZC/XFQHITLiHJxQngdtraXaM+LoUFoFp/lHNl2Zn8f3WQbe9HvTBBQ9YnKFB0/2Ajdqwo5D1EAw==}
     engines: {node: ^14.18.0 || >=16.0.0}
     peerDependencies:
@@ -11873,7 +11873,7 @@ packages:
     dependencies:
       eslint: 8.57.0
       eslint-config-prettier: 9.1.0(eslint@8.57.0)
-      prettier: 3.2.5
+      prettier: 3.4.2
       prettier-linter-helpers: 1.0.0
       synckit: 0.8.8
     dev: true
@@ -16090,8 +16090,8 @@ packages:
     engines: {node: '>=10.13.0'}
     hasBin: true
 
-  /prettier@3.2.5:
-    resolution: {integrity: sha512-3/GWa9aOC0YeD7LUfvOG2NiDyhOWRvt1k+rcKhOuYnMY24iiCphgneUfJDyFXd6rZCAnuLBv6UeAULtrhT/F4A==}
+  /prettier@3.4.2:
+    resolution: {integrity: sha512-e9MewbtFo+Fevyuxn/4rrcDAaq0IYxPGLvObpQjiZBMAzB9IGmzlnG9RZy3FFas+eBMu2vA0CszMeduow5dIuQ==}
     engines: {node: '>=14'}
     hasBin: true
     dev: true
diff --git a/smoke-tests/app-template/package.json b/smoke-tests/app-template/package.json
index dc4e815f5f1..de10b9ce3b7 100644
--- a/smoke-tests/app-template/package.json
+++ b/smoke-tests/app-template/package.json
@@ -58,7 +58,7 @@
     "eslint-plugin-qunit": "^8.1.1",
     "loader.js": "^4.7.0",
     "npm-run-all": "^4.1.5",
-    "prettier": "^3.2.5",
+    "prettier": "^3.4.2",
     "qunit": "^2.19.2",
     "qunit-dom": "^3.1.1",
     "webpack": "^5.74.0"