diff --git a/addon/package.json b/addon/package.json
index fedb21be..c911646c 100644
--- a/addon/package.json
+++ b/addon/package.json
@@ -64,7 +64,7 @@
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-prettier": "^4.2.1",
     "expect-type": "^0.16.0",
-    "prettier": "^2.8.8",
+    "prettier": "^3.1.0",
     "qunit": "^2.20.0",
     "release-it": "^16.1.5",
     "rollup": "^4.2.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 9fd1fed7..5773e5ed 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -70,13 +70,13 @@ importers:
         version: 11.1.0(eslint@8.52.0)
       eslint-plugin-prettier:
         specifier: ^4.2.1
-        version: 4.2.1(eslint-config-prettier@8.6.0)(eslint@8.52.0)(prettier@2.8.8)
+        version: 4.2.1(eslint-config-prettier@8.6.0)(eslint@8.52.0)(prettier@3.1.0)
       expect-type:
         specifier: ^0.16.0
         version: 0.16.0
       prettier:
-        specifier: ^2.8.8
-        version: 2.8.8
+        specifier: ^3.1.0
+        version: 3.1.0
       qunit:
         specifier: ^2.20.0
         version: 2.20.0
@@ -208,8 +208,8 @@ importers:
         specifier: ^0.0.9
         version: 0.0.9
       prettier:
-        specifier: ^2.8.8
-        version: 2.8.8
+        specifier: ^3.1.0
+        version: 3.1.0
       qunit:
         specifier: ^2.20.0
         version: 2.20.0
@@ -344,8 +344,8 @@ importers:
         specifier: ^0.0.9
         version: 0.0.9
       prettier:
-        specifier: ^2.8.8
-        version: 2.8.8
+        specifier: ^3.1.0
+        version: 3.1.0
       qunit:
         specifier: ^2.20.0
         version: 2.20.0
@@ -7021,7 +7021,7 @@ packages:
       semver: 6.3.0
     dev: true
 
-  /eslint-plugin-prettier@4.2.1(eslint-config-prettier@8.6.0)(eslint@8.52.0)(prettier@2.8.8):
+  /eslint-plugin-prettier@4.2.1(eslint-config-prettier@8.6.0)(eslint@8.52.0)(prettier@3.1.0):
     resolution: {integrity: sha512-f/0rXLXUt0oFYs8ra4w49wYZBG5GKZpAYsJSm6rnYL5uVDjd+zowwMwVZHnAjf4edNrKpCDYfXDgmRE/Ak7QyQ==}
     engines: {node: '>=12.0.0'}
     peerDependencies:
@@ -7034,7 +7034,7 @@ packages:
     dependencies:
       eslint: 8.52.0
       eslint-config-prettier: 8.6.0(eslint@8.52.0)
-      prettier: 2.8.8
+      prettier: 3.1.0
       prettier-linter-helpers: 1.0.0
     dev: true
 
@@ -11204,6 +11204,12 @@ packages:
     engines: {node: '>=10.13.0'}
     hasBin: true
 
+  /prettier@3.1.0:
+    resolution: {integrity: sha512-TQLvXjq5IAibjh8EpBIkNKxO749UEWABoiIZehEPiY4GNpVdhaFKqSTu+QrlU6D2dPAfubRmtJTi4K4YkQ5eXw==}
+    engines: {node: '>=14'}
+    hasBin: true
+    dev: true
+
   /pretty-bytes@5.6.0:
     resolution: {integrity: sha512-FFw039TmrBqFK8ma/7OL3sDz/VytdtJr044/QUJtH0wK9lb9jLq9tJyIxUwtQJHwar2BqtiA4iCWSwo9JLkzFg==}
     engines: {node: '>=6'}
diff --git a/test-app/package.json b/test-app/package.json
index a22d2bed..55ac81de 100644
--- a/test-app/package.json
+++ b/test-app/package.json
@@ -67,7 +67,7 @@
     "expect-type": "^0.16.0",
     "loader.js": "^4.7.0",
     "pnpm-sync-dependencies-meta-injected": "^0.0.9",
-    "prettier": "^2.8.8",
+    "prettier": "^3.1.0",
     "qunit": "^2.20.0",
     "qunit-dom": "^2.0.0",
     "typescript": "^4.9.5",
diff --git a/test-buildtime-options-app/package.json b/test-buildtime-options-app/package.json
index a5a10b74..25b9653a 100644
--- a/test-buildtime-options-app/package.json
+++ b/test-buildtime-options-app/package.json
@@ -67,7 +67,7 @@
     "expect-type": "^0.16.0",
     "loader.js": "^4.7.0",
     "pnpm-sync-dependencies-meta-injected": "^0.0.9",
-    "prettier": "^2.8.8",
+    "prettier": "^3.1.0",
     "qunit": "^2.20.0",
     "qunit-dom": "^2.0.0",
     "typescript": "^4.9.5",