+diff --git a/util/mkdef.pl b/util/mkdef.pl\r
+index c57c7f7..d4c3386 100755\r
+--- a/util/mkdef.pl\r
++++ b/util/mkdef.pl\r
+@@ -97,6 +97,8 @@ my @known_algorithms = ( "RC2", "RC4", "RC5", "IDEA", "DES", "BF",\r
+ "FP_API", "STDIO", "SOCK", "KRB5", "DGRAM",\r
+ # Engines\r
+ "STATIC_ENGINE", "ENGINE", "HW", "GMP",\r
++ # X.509v3 Signed Certificate Timestamps\r
++ "SCT",\r
+ # RFC3779\r
+ "RFC3779",\r
+ # TLS\r
+@@ -142,7 +144,7 @@ my $no_md2; my $no_md4; my $no_md5; my $no_sha; my $no_ripemd; my $no_mdc2;\r
+ my $no_rsa; my $no_dsa; my $no_dh; my $no_hmac=0; my $no_aes; my $no_krb5;\r
+ my $no_ec; my $no_ecdsa; my $no_ecdh; my $no_engine; my $no_hw;\r
+ my $no_fp_api; my $no_static_engine=1; my $no_gmp; my $no_deprecated;\r
+-my $no_rfc3779; my $no_psk; my $no_tlsext; my $no_cms; my $no_capieng;\r
++my $no_sct; my $no_rfc3779; my $no_psk; my $no_tlsext; my $no_cms; my $no_capieng;\r
+ my $no_jpake; my $no_srp; my $no_ssl2; my $no_ec2m; my $no_nistp_gcc; \r
+ my $no_nextprotoneg; my $no_sctp; my $no_srtp; my $no_ssl_trace;\r
+ my $no_unit_test; my $no_ssl3_method;\r
+@@ -233,6 +235,7 @@ foreach (@ARGV, split(/ /, $options))\r
+ elsif (/^no-engine$/) { $no_engine=1; }\r
+ elsif (/^no-hw$/) { $no_hw=1; }\r
+ elsif (/^no-gmp$/) { $no_gmp=1; }\r
++ elsif (/^no-sct$/) { $no_sct=1; }\r
+ elsif (/^no-rfc3779$/) { $no_rfc3779=1; }\r
+ elsif (/^no-tlsext$/) { $no_tlsext=1; }\r
+ elsif (/^no-cms$/) { $no_cms=1; }\r
+@@ -1206,6 +1209,7 @@ sub is_valid\r
+ if ($keyword eq "FP_API" && $no_fp_api) { return 0; }\r
+ if ($keyword eq "STATIC_ENGINE" && $no_static_engine) { return 0; }\r
+ if ($keyword eq "GMP" && $no_gmp) { return 0; }\r
++ if ($keyword eq "SCT" && $no_sct) { return 0; }\r
+ if ($keyword eq "RFC3779" && $no_rfc3779) { return 0; }\r
+ if ($keyword eq "TLSEXT" && $no_tlsext) { return 0; }\r
+ if ($keyword eq "PSK" && $no_psk) { return 0; }\r