diff --git a/h2_fastcgi_request_buffering.t b/h2_fastcgi_request_buffering.t
index 7f0ac39..00b95a8 100644
--- a/h2_fastcgi_request_buffering.t
+++ b/h2_fastcgi_request_buffering.t
@@ -265,7 +265,7 @@
 	my ($s, $timo) = @_;
 	my $buf = '';
 
-	if (IO::Select->new($s)->can_read($timo || 5)) {
+	if (IO::Select->new($s)->can_read($timo || 8)) {
 		$s->sysread($buf, 16384) or return;
 		log2i($buf);
 	}
diff --git a/h2_proxy_request_buffering.t b/h2_proxy_request_buffering.t
index f72cc24..75a22b1 100644
--- a/h2_proxy_request_buffering.t
+++ b/h2_proxy_request_buffering.t
@@ -265,7 +265,7 @@
 	my ($s, $timo) = @_;
 	my $buf = '';
 
-	if (IO::Select->new($s)->can_read($timo || 5)) {
+	if (IO::Select->new($s)->can_read($timo || 8)) {
 		$s->sysread($buf, 16384) or return;
 		log2i($buf);
 	}
diff --git a/h2_proxy_request_buffering_ssl.t b/h2_proxy_request_buffering_ssl.t
index 76a2383..5f15175 100644
--- a/h2_proxy_request_buffering_ssl.t
+++ b/h2_proxy_request_buffering_ssl.t
@@ -270,7 +270,7 @@
 	my ($s, $timo) = @_;
 	my $buf = '';
 
-	if (IO::Select->new($s)->can_read($timo || 5)) {
+	if (IO::Select->new($s)->can_read($timo || 8)) {
 		$s->sysread($buf, 16384) or return;
 		log2i($buf);
 	}
diff --git a/h2_ssl_verify_client.t b/h2_ssl_verify_client.t
index f65c267..e4af45d 100644
--- a/h2_ssl_verify_client.t
+++ b/h2_ssl_verify_client.t
@@ -114,7 +114,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		$s = IO::Socket::SSL->new(
 			Proto => 'tcp',
 			PeerAddr => '127.0.0.1',
diff --git a/lib/Test/Nginx/HTTP2.pm b/lib/Test/Nginx/HTTP2.pm
index d35937c..2a7f0a6 100644
--- a/lib/Test/Nginx/HTTP2.pm
+++ b/lib/Test/Nginx/HTTP2.pm
@@ -465,7 +465,7 @@
 
 sub raw_read {
 	my ($s, $buf, $len, $timo) = @_;
-	$timo = 5 unless $timo;
+	$timo = 8 unless $timo;
 	my $got = '';
 
 	while (length($buf) < $len && IO::Select->new($s)->can_read($timo)) {
@@ -501,7 +501,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		$s = IO::Socket::INET->new(
 			Proto => 'tcp',
 			PeerAddr => "127.0.0.1:$port",
diff --git a/ssl.t b/ssl.t
index 3565cad..dc128b1 100644
--- a/ssl.t
+++ b/ssl.t
@@ -300,7 +300,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		$s = IO::Socket::SSL->new(
 			Proto => 'tcp',
 			PeerAddr => '127.0.0.1',
diff --git a/ssl_certificate_chain.t b/ssl_certificate_chain.t
index 2934e34..d2aa542 100644
--- a/ssl_certificate_chain.t
+++ b/ssl_certificate_chain.t
@@ -150,7 +150,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		$s = IO::Socket::SSL->new(
 			Proto => 'tcp',
 			PeerAddr => '127.0.0.1',
diff --git a/ssl_certificates.t b/ssl_certificates.t
index dcebaaf..ab58ca9 100644
--- a/ssl_certificates.t
+++ b/ssl_certificates.t
@@ -121,7 +121,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		$s = IO::Socket::INET->new('127.0.0.1:' . port(8080));
 		alarm(0);
 	};
diff --git a/ssl_client_escaped_cert.t b/ssl_client_escaped_cert.t
index 259c5be..d2a70d9 100644
--- a/ssl_client_escaped_cert.t
+++ b/ssl_client_escaped_cert.t
@@ -101,7 +101,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		$s = IO::Socket::SSL->new(
 			Proto => 'tcp',
 			PeerAddr => '127.0.0.1',
diff --git a/ssl_crl.t b/ssl_crl.t
index ba4261d..25110ea 100644
--- a/ssl_crl.t
+++ b/ssl_crl.t
@@ -178,7 +178,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		$s = IO::Socket::SSL->new(
 			Proto => 'tcp',
 			PeerAddr => '127.0.0.1',
diff --git a/ssl_password_file.t b/ssl_password_file.t
index e1bcca3..f59d35a 100644
--- a/ssl_password_file.t
+++ b/ssl_password_file.t
@@ -147,7 +147,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		$s = IO::Socket::SSL->new(
 			Proto => 'tcp',
 			PeerAddr => '127.0.0.1:' . port(8081),
diff --git a/ssl_proxy_protocol.t b/ssl_proxy_protocol.t
index 8615921..6ef3a8a 100644
--- a/ssl_proxy_protocol.t
+++ b/ssl_proxy_protocol.t
@@ -156,7 +156,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		IO::Socket::SSL->start_SSL($s,
 			SSL_verify_mode => IO::Socket::SSL::SSL_VERIFY_NONE(),
 			SSL_error_trap => sub { die $_[1] }
diff --git a/ssl_sni.t b/ssl_sni.t
index 26fb124..13b2c71 100644
--- a/ssl_sni.t
+++ b/ssl_sni.t
@@ -133,7 +133,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		$s = IO::Socket::SSL->new(
 			Proto => 'tcp',
 			PeerAddr => '127.0.0.1:' . port(8080),
diff --git a/ssl_sni_reneg.t b/ssl_sni_reneg.t
index 7687b66..75878d7 100644
--- a/ssl_sni_reneg.t
+++ b/ssl_sni_reneg.t
@@ -171,7 +171,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		socket($s, &AF_INET, &SOCK_STREAM, 0) or die "socket: $!";
 		connect($s, $dest_serv_params) or die "connect: $!";
 		alarm(0);
diff --git a/ssl_sni_sessions.t b/ssl_sni_sessions.t
index 8b04c83..a6acab1 100644
--- a/ssl_sni_sessions.t
+++ b/ssl_sni_sessions.t
@@ -177,7 +177,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		$s = IO::Socket::SSL->new(
 			Proto => 'tcp',
 			PeerAddr => '127.0.0.1',
diff --git a/ssl_stapling.t b/ssl_stapling.t
index 251689b..fd9e701 100644
--- a/ssl_stapling.t
+++ b/ssl_stapling.t
@@ -294,7 +294,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		$s = IO::Socket::INET->new('127.0.0.1:' . port($port));
 		alarm(0);
 	};
@@ -335,7 +335,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		$s = IO::Socket::INET->new('127.0.0.1:' . port(8443));
 		alarm(0);
 	};
diff --git a/ssl_verify_depth.t b/ssl_verify_depth.t
index 452cccd..0912a54 100644
--- a/ssl_verify_depth.t
+++ b/ssl_verify_depth.t
@@ -142,7 +142,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		$s = IO::Socket::SSL->new(
 			Proto => 'tcp',
 			PeerAddr => '127.0.0.1',
diff --git a/stream_ssl_preread.t b/stream_ssl_preread.t
index 54085fa..e555e05 100644
--- a/stream_ssl_preread.t
+++ b/stream_ssl_preread.t
@@ -223,7 +223,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		IO::Socket::SSL->start_SSL($s->{_socket},
 			SSL_hostname => $host,
 			SSL_verify_mode => IO::Socket::SSL::SSL_VERIFY_NONE(),
diff --git a/stream_ssl_preread_alpn.t b/stream_ssl_preread_alpn.t
index ec72b60..70cdf25 100644
--- a/stream_ssl_preread_alpn.t
+++ b/stream_ssl_preread_alpn.t
@@ -127,7 +127,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		IO::Socket::SSL->start_SSL($s->{_socket},
 			SSL_alpn_protocols => [ @alpn ],
 			SSL_verify_mode => IO::Socket::SSL::SSL_VERIFY_NONE(),
diff --git a/stream_ssl_realip.t b/stream_ssl_realip.t
index 42f10ca..79cb65d 100644
--- a/stream_ssl_realip.t
+++ b/stream_ssl_realip.t
@@ -134,7 +134,7 @@
 	eval {
 		local $SIG{ALRM} = sub { die "timeout\n" };
 		local $SIG{PIPE} = sub { die "sigpipe\n" };
-		alarm(5);
+		alarm(8);
 		IO::Socket::SSL->start_SSL($s->{_socket},
 			SSL_verify_mode => IO::Socket::SSL::SSL_VERIFY_NONE(),
 			SSL_error_trap => sub { die $_[1] }