diff --git a/ocaml-lsp-server/test/e2e/package.json b/ocaml-lsp-server/test/e2e/package.json
index 8f25f7c85..2f9a908cf 100644
--- a/ocaml-lsp-server/test/e2e/package.json
+++ b/ocaml-lsp-server/test/e2e/package.json
@@ -15,7 +15,7 @@
     "@types/jest": "28.1.3",
     "@types/node": "^20.14.2",
     "jest": "28.1.1",
-    "prettier": "2.7.1",
+    "prettier": "3.3.2",
     "ts-jest": "28.0.5",
     "typescript": "5.4.5",
     "vscode-jsonrpc": "8.0.1",
diff --git a/ocaml-lsp-server/test/e2e/yarn.lock b/ocaml-lsp-server/test/e2e/yarn.lock
index 5c1eb8cee..ee3c18986 100644
--- a/ocaml-lsp-server/test/e2e/yarn.lock
+++ b/ocaml-lsp-server/test/e2e/yarn.lock
@@ -1832,10 +1832,10 @@ pkg-dir@^4.2.0:
   dependencies:
     find-up "^4.0.0"
 
-prettier@2.7.1:
-  version "2.7.1"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.7.1.tgz#e235806850d057f97bb08368a4f7d899f7760c64"
-  integrity sha512-ujppO+MkdPqoVINuDFDRLClm7D78qbDt0/NR+wp5FqEZOoTNAjPHWj17QRhu7geIHJfcNhRk1XVQmF8Bp3ye+g==
+prettier@3.3.2:
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.3.2.tgz#03ff86dc7c835f2d2559ee76876a3914cec4a90a"
+  integrity sha512-rAVeHYMcv8ATV5d508CFdn+8/pHPpXeIid1DdrPwXnaAdH7cqjVbpJaT5eq4yRAFU/lsbwYwSF/n5iNrdJHPQA==
 
 pretty-format@^28.0.0, pretty-format@^28.1.3:
   version "28.1.3"