diff --git a/doc/h2load.1 b/doc/h2load.1
index e0bbf4f7..c6559cb8 100644
--- a/doc/h2load.1
+++ b/doc/h2load.1
@@ -1,6 +1,6 @@
 .\" Man page generated from reStructuredText.
 .
-.TH "H2LOAD" "1" "September 24, 2015" "1.3.3" "nghttp2"
+.TH "H2LOAD" "1" "September 25, 2015" "1.3.4" "nghttp2"
 .SH NAME
 h2load \- HTTP/2 benchmarking tool
 .
diff --git a/doc/nghttp.1 b/doc/nghttp.1
index 73834182..d3ff2fe3 100644
--- a/doc/nghttp.1
+++ b/doc/nghttp.1
@@ -1,6 +1,6 @@
 .\" Man page generated from reStructuredText.
 .
-.TH "NGHTTP" "1" "September 24, 2015" "1.3.3" "nghttp2"
+.TH "NGHTTP" "1" "September 25, 2015" "1.3.4" "nghttp2"
 .SH NAME
 nghttp \- HTTP/2 experimental client
 .
diff --git a/doc/nghttpd.1 b/doc/nghttpd.1
index 6ddca0c8..e4897359 100644
--- a/doc/nghttpd.1
+++ b/doc/nghttpd.1
@@ -1,6 +1,6 @@
 .\" Man page generated from reStructuredText.
 .
-.TH "NGHTTPD" "1" "September 24, 2015" "1.3.3" "nghttp2"
+.TH "NGHTTPD" "1" "September 25, 2015" "1.3.4" "nghttp2"
 .SH NAME
 nghttpd \- HTTP/2 experimental server
 .
diff --git a/doc/nghttpx.1 b/doc/nghttpx.1
index 8bb934ef..207d0ad6 100644
--- a/doc/nghttpx.1
+++ b/doc/nghttpx.1
@@ -1,6 +1,6 @@
 .\" Man page generated from reStructuredText.
 .
-.TH "NGHTTPX" "1" "September 24, 2015" "1.3.3" "nghttp2"
+.TH "NGHTTPX" "1" "September 25, 2015" "1.3.4" "nghttp2"
 .SH NAME
 nghttpx \- HTTP/2 experimental proxy
 .
@@ -1012,6 +1012,10 @@ signals, and another one for processing requests.  The former spawns
 the latter.  The former is called master process, and the latter is
 called worker process.  The above signal must be sent to the master
 process.  If the worker process receives one of them, it is ignored.
+This behaviour of worker process may change in the future release.
+In other words, in the future release, worker process may terminate
+upon the reception of these signals.  Therefore these signals should
+not be sent to the worker process.
 .UNINDENT
 .UNINDENT
 .SH SERVER PUSH
diff --git a/doc/nghttpx.1.rst b/doc/nghttpx.1.rst
index aeece426..b2f6e834 100644
--- a/doc/nghttpx.1.rst
+++ b/doc/nghttpx.1.rst
@@ -916,6 +916,10 @@ SIGUSR2
   the latter.  The former is called master process, and the latter is
   called worker process.  The above signal must be sent to the master
   process.  If the worker process receives one of them, it is ignored.
+  This behaviour of worker process may change in the future release.
+  In other words, in the future release, worker process may terminate
+  upon the reception of these signals.  Therefore these signals should
+  not be sent to the worker process.
 
 SERVER PUSH
 -----------