diff --git a/u_parrots.go b/u_parrots.go
index 7e5c040..d495da7 100644
--- a/u_parrots.go
+++ b/u_parrots.go
@@ -284,6 +284,80 @@ func utlsIdToSpec(id ClientHelloID) (ClientHelloSpec, error) {
 				&UtlsPaddingExtension{GetPaddingLen: BoringPaddingStyle},
 			},
 		}, nil
+
+	case HelloChrome_100:
+		return ClientHelloSpec{
+			CipherSuites: []uint16{
+				0x3A3A,
+				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(0x6A6A),
+					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,
@@ -425,6 +499,7 @@ func utlsIdToSpec(id ClientHelloID) (ClientHelloSpec, error) {
 				TLS_RSA_WITH_AES_256_GCM_SHA384,
 				TLS_RSA_WITH_AES_128_CBC_SHA,
 				TLS_RSA_WITH_AES_256_CBC_SHA,
+				TLS_RSA_WITH_3DES_EDE_CBC_SHA,
 			},
 			CompressionMethods: []byte{
 				compressionNone,
@@ -444,9 +519,17 @@ func utlsIdToSpec(id ClientHelloID) (ClientHelloSpec, error) {
 				&SupportedPointsExtension{SupportedPoints: []byte{ //ec_point_formats
 					pointFormatUncompressed,
 				}},
+				&SessionTicketExtension{},
 				&ALPNExtension{AlpnProtocols: []string{"h2", "http/1.1"}}, //application_layer_protocol_negotiation
 				&StatusRequestExtension{},
-				//delegated_credentials
+				&DelegatesCredentialsExtension{
+					AlgorithmsSignature: []int16{ //signature_algorithms
+						0x403,
+						0x503,
+						0x603,
+						0x203,
+					},
+				},
 				&KeyShareExtension{[]KeyShare{
 					{Group: X25519},
 					{Group: CurveP256}, //key_share
diff --git a/u_tls_extensions.go b/u_tls_extensions.go
index 2e4d047..8d6ca02 100644
--- a/u_tls_extensions.go
+++ b/u_tls_extensions.go
@@ -754,3 +754,32 @@ func (e *FakeRecordSizeLimitExtension) Read(b []byte) (int, error) {
 	b[5] = byte(e.Limit & 0xff)
 	return e.Len(), io.EOF
 }
+
+type DelegatesCredentialsExtension struct {
+	AlgorithmsSignature []int16
+}
+
+func (e *DelegatesCredentialsExtension) writeToUConn(uc *UConn) error {
+	return nil
+}
+
+func (e *DelegatesCredentialsExtension) Len() int {
+	return 6 + 2*len(e.AlgorithmsSignature)
+}
+
+func (e *DelegatesCredentialsExtension) Read(b []byte) (int, error) {
+	if len(b) < e.Len() {
+		return 0, io.ErrShortBuffer
+	}
+	b[0] = byte(34 >> 8)
+	b[1] = byte(34)
+	b[2] = byte((2 + 2*len(e.AlgorithmsSignature)) >> 8)
+	b[3] = byte(2 + 2*len(e.AlgorithmsSignature))
+	b[4] = byte((2 * len(e.AlgorithmsSignature)) >> 8)
+	b[5] = byte(2 * len(e.AlgorithmsSignature))
+	for i, sigAndHash := range e.AlgorithmsSignature {
+		b[6+2*i] = byte(sigAndHash >> 8)
+		b[7+2*i] = byte(sigAndHash)
+	}
+	return e.Len(), io.EOF
+}