diff --git a/README.md b/README.md
index 2b52fd6..a49d545 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,18 @@ Manifest definition:
         { "path": "firmware.bin", "offset": 65536 }
       ]
     },
+    {
+      "chipFamily": "ESP32-C3",
+      "parts": [
+        { "path": "esp32-c3.bin", "offset": 0 },
+      ]
+    },
+    {
+      "chipFamily": "ESP32-S2",
+      "parts": [
+        { "path": "esp32-s2.bin", "offset": 0 },
+      ]
+    },
     {
       "chipFamily": "ESP8266",
       "parts": [
@@ -97,8 +109,8 @@ Field | Description
 state | The current [state](https://github.com/esphome/esp-web-tools/blob/main/src/const.ts)
 message | A description of the current state
 manifest | The loaded manifest
-build | The manifest's build that was selected 
-chipFamily | The chip that was detected; "ESP32" \| "ESP8266" \| "ESP32-S2" \| "Unknown Chip"
+build | The manifest's build that was selected
+chipFamily | The chip that was detected; "ESP32" \| "ESP8266" \| "ESP32-S2" \| "ESP32-C3" \| "Unknown Chip"
 details | An optional extra field that is different [per state](https://github.com/esphome/esp-web-tools/blob/main/src/const.ts)
 
 ## Development
diff --git a/src/const.ts b/src/const.ts
index f3e39e4..0ec91fe 100644
--- a/src/const.ts
+++ b/src/const.ts
@@ -1,5 +1,5 @@
 export interface Build {
-  chipFamily: "ESP32" | "ESP8266";
+  chipFamily: "ESP32" | "ESP8266" | "ESP32-S2" | "ESP32-C3";
   improv: boolean;
   parts: {
     path: string;
@@ -12,12 +12,12 @@ export interface Manifest {
   builds: Build[];
 }
 
-interface BaseFlashState {
+export interface BaseFlashState {
   state: State;
   message: string;
   manifest?: Manifest;
   build?: Build;
-  chipFamily?: "ESP32" | "ESP8266" | "ESP32-S2" | "Unknown Chip";
+  chipFamily?: Build["chipFamily"] | "Unknown Chip";
 }
 
 export interface InitializingState extends BaseFlashState {
diff --git a/src/flash.ts b/src/flash.ts
index 2fd4a85..9d12fab 100644
--- a/src/flash.ts
+++ b/src/flash.ts
@@ -10,7 +10,7 @@ export const flash = async (
 ) => {
   let manifest: Manifest;
   let build: Build | undefined;
-  let chipFamily: "ESP32" | "ESP8266" | "ESP32-S2" | "Unknown Chip";
+  let chipFamily: ReturnType<typeof getChipFamilyName>;
 
   const fireStateEvent = (stateUpdate: FlashState) => {
     fireEvent(eventTarget, "state-changed", {
diff --git a/src/util.ts b/src/util.ts
index 16714ab..c6cdebd 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -2,10 +2,14 @@ import {
   CHIP_FAMILY_ESP32,
   CHIP_FAMILY_ESP32S2,
   CHIP_FAMILY_ESP8266,
+  CHIP_FAMILY_ESP32C3,
   ESPLoader,
 } from "esp-web-flasher";
+import type { BaseFlashState } from "./const";
 
-export const getChipFamilyName = (esploader: ESPLoader) => {
+export const getChipFamilyName = (
+  esploader: ESPLoader
+): NonNullable<BaseFlashState["chipFamily"]> => {
   switch (esploader.chipFamily) {
     case CHIP_FAMILY_ESP32:
       return "ESP32";
@@ -13,6 +17,8 @@ export const getChipFamilyName = (esploader: ESPLoader) => {
       return "ESP8266";
     case CHIP_FAMILY_ESP32S2:
       return "ESP32-S2";
+    case CHIP_FAMILY_ESP32C3:
+      return "ESP32-C3";
     default:
       return "Unknown Chip";
   }