diff --git a/u_common.go b/u_common.go
index 285b9d4..de395ad 100644
--- a/u_common.go
+++ b/u_common.go
@@ -145,11 +145,12 @@ var (
 	HelloFirefox_63   = ClientHelloID{helloFirefox, "63", nil}
 	HelloFirefox_65   = ClientHelloID{helloFirefox, "65", nil}
 
-	HelloChrome_Auto = HelloChrome_72
+	HelloChrome_Auto = HelloChrome_83
 	HelloChrome_58   = ClientHelloID{helloChrome, "58", nil}
 	HelloChrome_62   = ClientHelloID{helloChrome, "62", nil}
 	HelloChrome_70   = ClientHelloID{helloChrome, "70", nil}
 	HelloChrome_72   = ClientHelloID{helloChrome, "72", nil}
+	HelloChrome_83   = ClientHelloID{helloChrome, "83", nil}
 
 	HelloIOS_Auto = HelloIOS_12_1
 	HelloIOS_11_1 = ClientHelloID{helloIOS, "111", nil} // legacy "111" means 11.1
diff --git a/u_parrots.go b/u_parrots.go
index 3d57599..c19c4b9 100644
--- a/u_parrots.go
+++ b/u_parrots.go
@@ -212,6 +212,78 @@ func utlsIdToSpec(id ClientHelloID) (ClientHelloSpec, error) {
 				&UtlsPaddingExtension{GetPaddingLen: BoringPaddingStyle},
 			},
 		}, nil
+	case HelloChrome_83:
+		return ClientHelloSpec{
+			CipherSuites: []uint16{
+				GREASE_PLACEHOLDER,
+				TLS_AES_128_GCM_SHA256,
+				TLS_AES_256_GCM_SHA384,
+				TLS_CHACHA20_POLY1305_SHA256,
+				TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
+				TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
+				TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
+				TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
+				TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
+				TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
+				TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
+				TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
+				TLS_RSA_WITH_AES_128_GCM_SHA256,
+				TLS_RSA_WITH_AES_256_GCM_SHA384,
+				TLS_RSA_WITH_AES_128_CBC_SHA,
+				TLS_RSA_WITH_AES_256_CBC_SHA,
+			},
+			CompressionMethods: []byte{
+				0x00, // compressionNone
+			},
+			Extensions: []TLSExtension{
+				&UtlsGREASEExtension{},
+				&SNIExtension{},
+				&UtlsExtendedMasterSecretExtension{},
+				&RenegotiationInfoExtension{Renegotiation: RenegotiateOnceAsClient},
+				&SupportedCurvesExtension{[]CurveID{
+					CurveID(GREASE_PLACEHOLDER),
+					X25519,
+					CurveP256,
+					CurveP384,
+				}},
+				&SupportedPointsExtension{SupportedPoints: []byte{
+					0x00, // pointFormatUncompressed
+				}},
+				&SessionTicketExtension{},
+				&ALPNExtension{AlpnProtocols: []string{"h2", "http/1.1"}},
+				&StatusRequestExtension{},
+				&SignatureAlgorithmsExtension{SupportedSignatureAlgorithms: []SignatureScheme{
+					ECDSAWithP256AndSHA256,
+					PSSWithSHA256,
+					PKCS1WithSHA256,
+					ECDSAWithP384AndSHA384,
+					PSSWithSHA384,
+					PKCS1WithSHA384,
+					PSSWithSHA512,
+					PKCS1WithSHA512,
+				}},
+				&SCTExtension{},
+				&KeyShareExtension{[]KeyShare{
+					{Group: CurveID(GREASE_PLACEHOLDER), Data: []byte{0}},
+					{Group: X25519},
+				}},
+				&PSKKeyExchangeModesExtension{[]uint8{
+					PskModeDHE,
+				}},
+				&SupportedVersionsExtension{[]uint16{
+					GREASE_PLACEHOLDER,
+					VersionTLS13,
+					VersionTLS12,
+					VersionTLS11,
+					VersionTLS10,
+				}},
+				&FakeCertCompressionAlgsExtension{[]CertCompressionAlgo{
+					CertCompressionBrotli,
+				}},
+				&UtlsGREASEExtension{},
+				&UtlsPaddingExtension{GetPaddingLen: BoringPaddingStyle},
+			},
+		}, nil
 	case HelloFirefox_55, HelloFirefox_56:
 		return ClientHelloSpec{
 			TLSVersMax: VersionTLS12,