diff --git a/package-lock.json b/package-lock.json
index ce00184e..353db9a1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,7 +30,7 @@
         "@rollup/plugin-terser": "^0.4.3",
         "@rollup/plugin-typescript": "^11.1.1",
         "@types/w3c-web-serial": "^1.0.3",
-        "prettier": "^2.8.8",
+        "prettier": "^3.0.0",
         "rollup": "^3.24.0",
         "serve": "^14.2.0",
         "typescript": "^5.1.3"
@@ -2412,15 +2412,15 @@
       }
     },
     "node_modules/prettier": {
-      "version": "2.8.8",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.8.8.tgz",
-      "integrity": "sha512-tdN8qQGvNjw4CHbY+XXk0JgCXn9QiF21a55rBe5LJAU+kDyC4WQn4+awm2Xfk2lQMk5fKup9XgzTZtGkjBdP9Q==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.0.0.tgz",
+      "integrity": "sha512-zBf5eHpwHOGPC47h0zrPyNn+eAEIdEzfywMoYn2XPi0P44Zp0tSq64rq0xAREh4auw2cJZHo9QUob+NqCQky4g==",
       "dev": true,
       "bin": {
-        "prettier": "bin-prettier.js"
+        "prettier": "bin/prettier.cjs"
       },
       "engines": {
-        "node": ">=10.13.0"
+        "node": ">=14"
       },
       "funding": {
         "url": "https://github.com/prettier/prettier?sponsor=1"
@@ -4807,9 +4807,9 @@
       "dev": true
     },
     "prettier": {
-      "version": "2.8.8",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.8.8.tgz",
-      "integrity": "sha512-tdN8qQGvNjw4CHbY+XXk0JgCXn9QiF21a55rBe5LJAU+kDyC4WQn4+awm2Xfk2lQMk5fKup9XgzTZtGkjBdP9Q==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.0.0.tgz",
+      "integrity": "sha512-zBf5eHpwHOGPC47h0zrPyNn+eAEIdEzfywMoYn2XPi0P44Zp0tSq64rq0xAREh4auw2cJZHo9QUob+NqCQky4g==",
       "dev": true
     },
     "punycode": {
diff --git a/package.json b/package.json
index 0e073a66..573bad9e 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "@rollup/plugin-typescript": "^11.1.1",
     "@rollup/plugin-terser": "^0.4.3",
     "@types/w3c-web-serial": "^1.0.3",
-    "prettier": "^2.8.8",
+    "prettier": "^3.0.0",
     "rollup": "^3.24.0",
     "serve": "^14.2.0",
     "typescript": "^5.1.3"
diff --git a/src/components/ewt-console.ts b/src/components/ewt-console.ts
index 31362041..b51fec70 100644
--- a/src/components/ewt-console.ts
+++ b/src/components/ewt-console.ts
@@ -100,7 +100,7 @@ export class EwtConsole extends HTMLElement {
             write: (chunk) => {
               this._console!.addLine(chunk.replace("\r", ""));
             },
-          })
+          }),
         );
       if (!abortSignal.aborted) {
         this._console!.addLine("");
diff --git a/src/connect.ts b/src/connect.ts
index a196cdcf..cf730105 100644
--- a/src/connect.ts
+++ b/src/connect.ts
@@ -8,7 +8,7 @@ export const connect = async (button: InstallButton) => {
   } catch (err: any) {
     if ((err as DOMException).name === "NotFoundError") {
       import("./no-port-picked/index").then((mod) =>
-        mod.openNoPortPickedDialog(() => connect(button))
+        mod.openNoPortPickedDialog(() => connect(button)),
       );
       return;
     }
@@ -36,7 +36,7 @@ export const connect = async (button: InstallButton) => {
     () => {
       port!.close();
     },
-    { once: true }
+    { once: true },
   );
   document.body.appendChild(el);
 };
diff --git a/src/flash.ts b/src/flash.ts
index 54679b4c..1b5041b3 100644
--- a/src/flash.ts
+++ b/src/flash.ts
@@ -24,7 +24,7 @@ export const flash = async (
   port: SerialPort,
   manifestPath: string,
   manifest: Manifest,
-  eraseFirst: boolean
+  eraseFirst: boolean,
 ) => {
   let build: Build | undefined;
   let chipFamily: Build["chipFamily"];
@@ -116,7 +116,7 @@ export const flash = async (
     const resp = await fetch(url);
     if (!resp.ok) {
       throw new Error(
-        `Downlading firmware ${part.path} failed: ${resp.status}`
+        `Downlading firmware ${part.path} failed: ${resp.status}`,
       );
     }
 
@@ -198,7 +198,7 @@ export const flash = async (
           (written / total) * fileArray[fileIndex].data.length;
 
         const newPct = Math.floor(
-          ((totalWritten + uncompressedWritten) / totalSize) * 100
+          ((totalWritten + uncompressedWritten) / totalSize) * 100,
         );
 
         // we're done with this file
diff --git a/src/install-dialog.ts b/src/install-dialog.ts
index 11e19abb..b212e7e8 100644
--- a/src/install-dialog.ts
+++ b/src/install-dialog.ts
@@ -34,7 +34,7 @@ import { dialogStyles } from "./styles";
 import { version } from "./version";
 
 console.log(
-  `ESP Web Tools ${version} by Nabu Casa; https://esphome.github.io/esp-web-tools/`
+  `ESP Web Tools ${version} by Nabu Casa; https://esphome.github.io/esp-web-tools/`,
 );
 
 const ERROR_ICON = "⚠️";
@@ -50,7 +50,7 @@ export class EwtInstallDialog extends LitElement {
   public overrides?: {
     checkSameFirmware?: (
       manifest: Manifest,
-      deviceImprov: ImprovSerial["info"]
+      deviceImprov: ImprovSerial["info"],
     ) => boolean;
   };
 
@@ -340,7 +340,7 @@ export class EwtInstallDialog extends LitElement {
         this._renderProgress(
           this._ssids === undefined
             ? "Scanning for networks"
-            : "Trying to connect"
+            : "Trying to connect",
         ),
         true,
       ];
@@ -439,7 +439,7 @@ export class EwtInstallDialog extends LitElement {
           error = `Unknown error (${this._client!.error})`;
       }
       const selectedSsid = this._ssids?.find(
-        (info) => info.name === this._selectedSsid
+        (info) => info.name === this._selectedSsid,
       );
       content = html`
         <div>
@@ -470,7 +470,7 @@ export class EwtInstallDialog extends LitElement {
                     >
                       ${info.name}
                     </ewt-list-item>
-                  `
+                  `,
                 )}
                 <ewt-list-item .selected=${!selectedSsid} value="-1">
                   Join other…
@@ -633,7 +633,7 @@ export class EwtInstallDialog extends LitElement {
             : "2 minutes"}.<br />
           Keep this page visible to prevent slow down
         `,
-        percentage
+        percentage,
       );
       hideActions = true;
     } else if (this._installState.state === FlashStateType.FINISHED) {
@@ -695,7 +695,7 @@ export class EwtInstallDialog extends LitElement {
         @click=${() => {
           textDownload(
             this.shadowRoot!.querySelector("ewt-console")!.logs(),
-            `esp-web-tools-logs.txt`
+            `esp-web-tools-logs.txt`,
           );
 
           this.shadowRoot!.querySelector("ewt-console")!.reset();
@@ -805,7 +805,7 @@ export class EwtInstallDialog extends LitElement {
 
   private _focusFormElement(selector = "ewt-textfield, ewt-select") {
     const formEl = this.shadowRoot!.querySelector(
-      selector
+      selector,
     ) as LitElement | null;
     if (formEl) {
       formEl.updateComplete.then(() => setTimeout(() => formEl.focus(), 100));
@@ -898,7 +898,7 @@ export class EwtInstallDialog extends LitElement {
       this.port,
       this.manifestPath,
       this._manifest,
-      this._installErase
+      this._installErase,
     );
     // YOLO2
   }
@@ -911,14 +911,14 @@ export class EwtInstallDialog extends LitElement {
       this._selectedSsid === null
         ? (
             this.shadowRoot!.querySelector(
-              "ewt-textfield[name=ssid]"
+              "ewt-textfield[name=ssid]",
             ) as EwtTextfield
           ).value
         : this._selectedSsid;
     const password =
       (
         this.shadowRoot!.querySelector(
-          "ewt-textfield[name=password]"
+          "ewt-textfield[name=password]",
         ) as EwtTextfield | null
       )?.value || "";
     try {
diff --git a/src/no-port-picked/index.ts b/src/no-port-picked/index.ts
index 3a781ae1..e01ca217 100644
--- a/src/no-port-picked/index.ts
+++ b/src/no-port-picked/index.ts
@@ -1,7 +1,7 @@
 import "./no-port-picked-dialog";
 
 export const openNoPortPickedDialog = async (
-  doTryAgain?: () => void
+  doTryAgain?: () => void,
 ): Promise<boolean> => {
   const dialog = document.createElement("ewt-no-port-picked-dialog");
   dialog.doTryAgain = doTryAgain;
diff --git a/src/util/fire-event.ts b/src/util/fire-event.ts
index 184a38b4..541e47a4 100644
--- a/src/util/fire-event.ts
+++ b/src/util/fire-event.ts
@@ -7,7 +7,7 @@ export const fireEvent = <Event extends keyof HTMLElementEventMap>(
     bubbles?: boolean;
     cancelable?: boolean;
     composed?: boolean;
-  }
+  },
 ): void => {
   options = options || {};
   const event = new CustomEvent(type, {
diff --git a/src/util/line-break-transformer.ts b/src/util/line-break-transformer.ts
index 71a9323d..353d83d2 100644
--- a/src/util/line-break-transformer.ts
+++ b/src/util/line-break-transformer.ts
@@ -3,7 +3,7 @@ export class LineBreakTransformer implements Transformer<string, string> {
 
   transform(
     chunk: string,
-    controller: TransformStreamDefaultController<string>
+    controller: TransformStreamDefaultController<string>,
   ) {
     // Append new chunks to existing chunks.
     this.chunks += chunk;
diff --git a/src/util/manifest.ts b/src/util/manifest.ts
index 0b343463..55a1fff1 100644
--- a/src/util/manifest.ts
+++ b/src/util/manifest.ts
@@ -7,7 +7,7 @@ export const downloadManifest = async (manifestPath: string) => {
 
   if ("new_install_skip_erase" in manifest) {
     console.warn(
-      'Manifest option "new_install_skip_erase" is deprecated. Use "new_install_prompt_erase" instead.'
+      'Manifest option "new_install_skip_erase" is deprecated. Use "new_install_prompt_erase" instead.',
     );
     if (manifest.new_install_skip_erase) {
       manifest.new_install_prompt_erase = true;