diff --git a/package.json b/package.json
index ad02c6228..1a93b46a7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "prettier",
-  "version": "3.8.4",
+  "version": "3.9.0-dev",
   "description": "Prettier is an opinionated code formatter",
   "bin": "./bin/prettier.cjs",
   "repository": "prettier/prettier",
@@ -165,7 +165,7 @@
     "node-style-text": "2.1.2",
     "npm-run-all2": "8.0.4",
     "open-editor": "6.0.0",
-    "prettier": "3.8.3",
+    "prettier": "3.8.4",
     "pretty-bytes": "7.1.0",
     "pretty-ms": "9.3.0",
     "rollup-plugin-license": "3.6.0",
diff --git a/yarn.lock b/yarn.lock
index 7ff8fb2c6..3d0ead948 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7536,12 +7536,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"prettier@npm:3.8.3":
-  version: 3.8.3
-  resolution: "prettier@npm:3.8.3"
+"prettier@npm:3.8.4":
+  version: 3.8.4
+  resolution: "prettier@npm:3.8.4"
   bin:
     prettier: bin/prettier.cjs
-  checksum: 10/4b3b12cbb29e4c96bed936e5d070167552500c18d37676fb3e0caae6199c42860662608e4dc116230698f6e2bb0267ef2548158224c92d40f188d309d72fdd6f
+  checksum: 10/54684a3cc6689238692b29fab541c01934af7677be94c02293ba49981a1ac121c8bebe2a865f0c3b963e99d208f847c53aed354cc0ce8750e2d45791d64506c5
   languageName: node
   linkType: hard
 
@@ -7652,7 +7652,7 @@ __metadata:
     postcss-scss: "npm:4.0.9"
     postcss-selector-parser: "npm:2.2.3"
     postcss-values-parser: "npm:2.0.1"
-    prettier: "npm:3.8.3"
+    prettier: "npm:3.8.4"
     pretty-bytes: "npm:7.1.0"
     pretty-ms: "npm:9.3.0"
     regexp-util: "npm:2.0.3"