diff --git a/util/mkdef.pl b/util/mkdef.pl
index d20bac6e8..43b2c2b59 100755
--- a/util/mkdef.pl
+++ b/util/mkdef.pl
@@ -331,6 +331,7 @@ $crypto.=" include/openssl/cms.h";
 $crypto.=" include/openssl/jpake.h";
 $crypto.=" include/openssl/srp.h";
 $crypto.=" include/openssl/modes.h";
+$crypto.=" include/openssl/async.h";
 
 my $symhacks="include/openssl/symhacks.h";
 
diff --git a/util/mkfiles.pl b/util/mkfiles.pl
index 68a9a6c04..6e43cbfae 100755
--- a/util/mkfiles.pl
+++ b/util/mkfiles.pl
@@ -64,6 +64,7 @@ my @dirs = (
 "crypto/ts",
 "crypto/srp",
 "crypto/ct",
+"crypto/async",
 "ssl",
 "apps",
 "engines",