diff --git a/doc/h2load.1 b/doc/h2load.1
index 9f4cec51..df052ab6 100644
--- a/doc/h2load.1
+++ b/doc/h2load.1
@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "H2LOAD" "1" "Oct 27, 2023" "1.58.0" "nghttp2"
+.TH "H2LOAD" "1" "Jan 21, 2024" "1.59.0" "nghttp2"
 .SH NAME
 h2load \- HTTP/2 benchmarking tool
 .SH SYNOPSIS
@@ -255,20 +255,19 @@ input files as usual.
 .UNINDENT
 .INDENT 0.0
 .TP
-.B \-\-npn\-list=<LIST>
+.B \-\-alpn\-list=<LIST>
 Comma delimited list of  ALPN protocol identifier sorted
 in the  order of preference.  That  means most desirable
-protocol comes  first.  This  is used  in both  ALPN and
-NPN.  The parameter must be  delimited by a single comma
-only  and any  white spaces  are  treated as  a part  of
-protocol string.
+protocol comes  first.  The parameter must  be delimited
+by a single comma only  and any white spaces are treated
+as a part of protocol string.
 .sp
 Default: \fBh2,h2\-16,h2\-14,http/1.1\fP
 .UNINDENT
 .INDENT 0.0
 .TP
 .B \-\-h1
-Short        hand         for        \fI\%\-\-npn\-list\fP=http/1.1
+Short        hand        for        \fI\%\-\-alpn\-list\fP=http/1.1
 \fI\%\-\-no\-tls\-proto\fP=http/1.1,    which   effectively    force
 http/1.1 for both http and https URI.
 .UNINDENT
diff --git a/doc/h2load.1.rst b/doc/h2load.1.rst
index 0f65849d..85ed651b 100644
--- a/doc/h2load.1.rst
+++ b/doc/h2load.1.rst
@@ -213,20 +213,19 @@ OPTIONS
     the first  URI appeared  in the  command line  or inside
     input files as usual.
 
-.. option:: --npn-list=<LIST>
+.. option:: --alpn-list=<LIST>
 
     Comma delimited list of  ALPN protocol identifier sorted
     in the  order of preference.  That  means most desirable
-    protocol comes  first.  This  is used  in both  ALPN and
-    NPN.  The parameter must be  delimited by a single comma
-    only  and any  white spaces  are  treated as  a part  of
-    protocol string.
+    protocol comes  first.  The parameter must  be delimited
+    by a single comma only  and any white spaces are treated
+    as a part of protocol string.
 
     Default: ``h2,h2-16,h2-14,http/1.1``
 
 .. option:: --h1
 
-    Short        hand         for        :option:`--npn-list`\=http/1.1
+    Short        hand        for        :option:`--alpn-list`\=http/1.1
     :option:`--no-tls-proto`\=http/1.1,    which   effectively    force
     http/1.1 for both http and https URI.
 
diff --git a/doc/nghttp.1 b/doc/nghttp.1
index 4bf274fb..332d9c68 100644
--- a/doc/nghttp.1
+++ b/doc/nghttp.1
@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "NGHTTP" "1" "Oct 27, 2023" "1.58.0" "nghttp2"
+.TH "NGHTTP" "1" "Jan 21, 2024" "1.59.0" "nghttp2"
 .SH NAME
 nghttp \- HTTP/2 client
 .SH SYNOPSIS
diff --git a/doc/nghttpd.1 b/doc/nghttpd.1
index 232757da..219a3658 100644
--- a/doc/nghttpd.1
+++ b/doc/nghttpd.1
@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "NGHTTPD" "1" "Oct 27, 2023" "1.58.0" "nghttp2"
+.TH "NGHTTPD" "1" "Jan 21, 2024" "1.59.0" "nghttp2"
 .SH NAME
 nghttpd \- HTTP/2 server
 .SH SYNOPSIS
diff --git a/doc/nghttpx.1 b/doc/nghttpx.1
index 1aaa47e6..e9742a5c 100644
--- a/doc/nghttpx.1
+++ b/doc/nghttpx.1
@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "NGHTTPX" "1" "Oct 27, 2023" "1.58.0" "nghttp2"
+.TH "NGHTTPX" "1" "Jan 21, 2024" "1.59.0" "nghttp2"
 .SH NAME
 nghttpx \- HTTP/2 proxy
 .SH SYNOPSIS
@@ -783,13 +783,12 @@ available.
 .UNINDENT
 .INDENT 0.0
 .TP
-.B \-\-npn\-list=<LIST>
+.B \-\-alpn\-list=<LIST>
 Comma delimited list of  ALPN protocol identifier sorted
 in the  order of preference.  That  means most desirable
-protocol comes  first.  This  is used  in both  ALPN and
-NPN.  The parameter must be  delimited by a single comma
-only  and any  white spaces  are  treated as  a part  of
-protocol string.
+protocol comes  first.  The parameter must  be delimited
+by a single comma only  and any white spaces are treated
+as a part of protocol string.
 .sp
 Default: \fBh2,h2\-16,h2\-14,http/1.1\fP
 .UNINDENT
diff --git a/doc/nghttpx.1.rst b/doc/nghttpx.1.rst
index b70b1632..03109e43 100644
--- a/doc/nghttpx.1.rst
+++ b/doc/nghttpx.1.rst
@@ -728,14 +728,13 @@ SSL/TLS
     Without  this   option,  DHE   cipher  suites   are  not
     available.
 
-.. option:: --npn-list=<LIST>
+.. option:: --alpn-list=<LIST>
 
     Comma delimited list of  ALPN protocol identifier sorted
     in the  order of preference.  That  means most desirable
-    protocol comes  first.  This  is used  in both  ALPN and
-    NPN.  The parameter must be  delimited by a single comma
-    only  and any  white spaces  are  treated as  a part  of
-    protocol string.
+    protocol comes  first.  The parameter must  be delimited
+    by a single comma only  and any white spaces are treated
+    as a part of protocol string.
 
     Default: ``h2,h2-16,h2-14,http/1.1``