diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c3216eb6..5135c2d8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,8 +12,8 @@ jobs:
   ci:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 16
           registry-url: 'https://registry.npmjs.org'
@@ -32,7 +32,7 @@ jobs:
           echo $ESPTOOLJS_VERSION
           echo "version=$ESPTOOLJS_VERSION" >> $GITHUB_OUTPUT
       - name: Upload npm package file
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v4
         with:
           name: esptool-js-${{ steps.version.outputs.version }}.tgz
           path: esptool-js-${{ steps.version.outputs.version }}.tgz
\ No newline at end of file
diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index 37c2c0d0..ecb00ee7 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -25,9 +25,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Set up Node
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: 18
       - name: Install Node modules
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index aa168050..b29b3a23 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -7,8 +7,8 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 16
           registry-url: "https://registry.npmjs.org"
@@ -26,7 +26,7 @@ jobs:
           [ ${GITHUB_REF:11} = $(node -p "require('./package.json').version") ]
           echo "version=${GITHUB_REF:11}" >> $GITHUB_OUTPUT
       - name: Upload package file
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v4
         with:
           name: esptool-js-${{ steps.version.outputs.version }}.tgz
           path: esptool-js-${{ steps.version.outputs.version }}.tgz
diff --git a/src/esploader.ts b/src/esploader.ts
index 54a9399a..f60405ea 100644
--- a/src/esploader.ts
+++ b/src/esploader.ts
@@ -139,6 +139,10 @@ async function magic2Chip(magic: number): Promise<ROM | null> {
       const { ESP32C6ROM } = await import("./targets/esp32c6.js");
       return new ESP32C6ROM();
     }
+    case 0x1101406f: {
+      const { ESP32C5ROM } = await import("./targets/esp32c5.js");
+      return new ESP32C5ROM();
+    }
     case 0xd7b73e80: {
       const { ESP32H2ROM } = await import("./targets/esp32h2.js");
       return new ESP32H2ROM();
diff --git a/src/targets/esp32c5.ts b/src/targets/esp32c5.ts
new file mode 100644
index 00000000..dc9cc285
--- /dev/null
+++ b/src/targets/esp32c5.ts
@@ -0,0 +1,151 @@
+import { ESPLoader } from "../esploader";
+import { ESP32C6ROM } from "./esp32c6";
+import ESP32C5_STUB from "./stub_flasher/stub_flasher_32c5.json";
+
+export class ESP32C5ROM extends ESP32C6ROM {
+  public CHIP_NAME = "ESP32-C5";
+  public IMAGE_CHIP_ID = 23;
+
+  public EFUSE_BASE = 0x600b4800;
+  public EFUSE_BLOCK1_ADDR = this.EFUSE_BASE + 0x044;
+  public MAC_EFUSE_REG = this.EFUSE_BASE + 0x044;
+  public UART_CLKDIV_REG = 0x60000014;
+
+  public TEXT_START = ESP32C5_STUB.text_start;
+  public ENTRY = ESP32C5_STUB.entry;
+  public DATA_START = ESP32C5_STUB.data_start;
+  public ROM_DATA = ESP32C5_STUB.data;
+  public ROM_TEXT = ESP32C5_STUB.text;
+
+  public EFUSE_RD_REG_BASE = this.EFUSE_BASE + 0x030; // BLOCK0 read base address
+
+  public EFUSE_PURPOSE_KEY0_REG = this.EFUSE_BASE + 0x34;
+  public EFUSE_PURPOSE_KEY0_SHIFT = 24;
+  public EFUSE_PURPOSE_KEY1_REG = this.EFUSE_BASE + 0x34;
+  public EFUSE_PURPOSE_KEY1_SHIFT = 28;
+  public EFUSE_PURPOSE_KEY2_REG = this.EFUSE_BASE + 0x38;
+  public EFUSE_PURPOSE_KEY2_SHIFT = 0;
+  public EFUSE_PURPOSE_KEY3_REG = this.EFUSE_BASE + 0x38;
+  public EFUSE_PURPOSE_KEY3_SHIFT = 4;
+  public EFUSE_PURPOSE_KEY4_REG = this.EFUSE_BASE + 0x38;
+  public EFUSE_PURPOSE_KEY4_SHIFT = 8;
+  public EFUSE_PURPOSE_KEY5_REG = this.EFUSE_BASE + 0x38;
+  public EFUSE_PURPOSE_KEY5_SHIFT = 12;
+
+  public EFUSE_DIS_DOWNLOAD_MANUAL_ENCRYPT_REG = this.EFUSE_RD_REG_BASE;
+  public EFUSE_DIS_DOWNLOAD_MANUAL_ENCRYPT = 1 << 20;
+
+  public EFUSE_SPI_BOOT_CRYPT_CNT_REG = this.EFUSE_BASE + 0x034;
+  public EFUSE_SPI_BOOT_CRYPT_CNT_MASK = 0x7 << 18;
+
+  public EFUSE_SECURE_BOOT_EN_REG = this.EFUSE_BASE + 0x038;
+  public EFUSE_SECURE_BOOT_EN_MASK = 1 << 20;
+
+  public IROM_MAP_START = 0x42000000;
+  public IROM_MAP_END = 0x42800000;
+  public DROM_MAP_START = 0x42800000;
+  public DROM_MAP_END = 0x43000000;
+
+  public PCR_SYSCLK_CONF_REG = 0x60096110;
+  public PCR_SYSCLK_XTAL_FREQ_V = 0x7f << 24;
+  public PCR_SYSCLK_XTAL_FREQ_S = 24;
+
+  public XTAL_CLK_DIVIDER = 1;
+
+  public UARTDEV_BUF_NO = 0x4085f51c; // Variable in ROM .bss which indicates the port in use
+
+  // Magic value for ESP32C5
+  public CHIP_DETECT_MAGIC_VALUE = [0x1101406f];
+
+  public FLASH_FREQUENCY = {
+    "80m": 0xf,
+    "40m": 0x0,
+    "20m": 0x2,
+  };
+
+  public MEMORY_MAP = [
+    [0x00000000, 0x00010000, "PADDING"],
+    [0x42800000, 0x43000000, "DROM"],
+    [0x40800000, 0x40860000, "DRAM"],
+    [0x40800000, 0x40860000, "BYTE_ACCESSIBLE"],
+    [0x4003a000, 0x40040000, "DROM_MASK"],
+    [0x40000000, 0x4003a000, "IROM_MASK"],
+    [0x42000000, 0x42800000, "IROM"],
+    [0x40800000, 0x40860000, "IRAM"],
+    [0x50000000, 0x50004000, "RTC_IRAM"],
+    [0x50000000, 0x50004000, "RTC_DRAM"],
+    [0x600fe000, 0x60100000, "MEM_INTERNAL2"],
+  ];
+
+  UF2_FAMILY_ID = 0xf71c0343;
+
+  EFUSE_MAX_KEY = 5;
+  KEY_PURPOSES = {
+    0: "USER/EMPTY",
+    1: "ECDSA_KEY",
+    2: "XTS_AES_256_KEY_1",
+    3: "XTS_AES_256_KEY_2",
+    4: "XTS_AES_128_KEY",
+    5: "HMAC_DOWN_ALL",
+    6: "HMAC_DOWN_JTAG",
+    7: "HMAC_DOWN_DIGITAL_SIGNATURE",
+    8: "HMAC_UP",
+    9: "SECURE_BOOT_DIGEST0",
+    10: "SECURE_BOOT_DIGEST1",
+    11: "SECURE_BOOT_DIGEST2",
+    12: "KM_INIT_KEY",
+  };
+
+  public async getPkgVersion(loader: ESPLoader): Promise<number> {
+    const numWord = 2;
+    return ((await loader.readReg(this.EFUSE_BLOCK1_ADDR + 4 * numWord)) >> 26) & 0x07;
+  }
+
+  public async getMinorChipVersion(loader: ESPLoader): Promise<number> {
+    const numWord = 2;
+    return ((await loader.readReg(this.EFUSE_BLOCK1_ADDR + 4 * numWord)) >> 0) & 0x0f;
+  }
+
+  public async getMajorChipVersion(loader: ESPLoader): Promise<number> {
+    const numWord = 2;
+    return ((await loader.readReg(this.EFUSE_BLOCK1_ADDR + 4 * numWord)) >> 4) & 0x03;
+  }
+
+  public async getChipDescription(loader: ESPLoader): Promise<string> {
+    const pkgVer = await this.getPkgVersion(loader);
+    let desc: string;
+    if (pkgVer === 0) {
+      desc = "ESP32-C5";
+    } else {
+      desc = "unknown ESP32-C5";
+    }
+    const majorRev = await this.getMajorChipVersion(loader);
+    const minorRev = await this.getMinorChipVersion(loader);
+    return `${desc} (revision v${majorRev}.${minorRev})`;
+  }
+
+  public async getCrystalFreq(loader: ESPLoader): Promise<number> {
+    // The crystal detection algorithm of ESP32/ESP8266
+    // works for ESP32-C5 as well.
+    const uartDiv = (await loader.readReg(this.UART_CLKDIV_REG)) & this.UART_CLKDIV_MASK;
+    const etsXtal = (loader.transport.baudrate * uartDiv) / 1000000 / this.XTAL_CLK_DIVIDER;
+    let normXtal;
+    if (etsXtal > 45) {
+      normXtal = 48;
+    } else if (etsXtal > 33) {
+      normXtal = 40;
+    } else {
+      normXtal = 26;
+    }
+    if (Math.abs(normXtal - etsXtal) > 1) {
+      loader.info("WARNING: Unsupported crystal in use");
+    }
+    return normXtal;
+  }
+
+  public async getCrystalFreqRomExpect(loader: ESPLoader) {
+    return (
+      ((await loader.readReg(this.PCR_SYSCLK_CONF_REG)) & this.PCR_SYSCLK_XTAL_FREQ_V) >> this.PCR_SYSCLK_XTAL_FREQ_S
+    );
+  }
+}
diff --git a/src/targets/stub_flasher/stub_flasher_32c5.json b/src/targets/stub_flasher/stub_flasher_32c5.json
new file mode 100644
index 00000000..896e7009
--- /dev/null
+++ b/src/targets/stub_flasher/stub_flasher_32c5.json
@@ -0,0 +1,8 @@
+{
+  "entry": 1082132164,
+  "text": "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",
+  "text_start": 1082130432,
+  "data": "FACEQG4KgEC+CoBAFguAQOQLgEBQDIBA/guAQDoJgECgC4BA4AuAQCoLgEDqCIBAXguAQOoIgEBICoBAjgqAQL4KgEAWC4BAWgqAQJ4JgEDOCYBAVgqAQKgOgEC+CoBAaA2AQGAOgEAqCIBAiA6AQCoIgEAqCIBAKgiAQCoIgEAqCIBAKgiAQCoIgEAqCIBABA2AQCoIgECGDYBAYA6AQA==",
+  "data_start": 1082469296,
+  "bss_start": 1082392576
+}
\ No newline at end of file