diff --git a/doc/h2load.1 b/doc/h2load.1
index 613cd457..249df303 100644
--- a/doc/h2load.1
+++ b/doc/h2load.1
@@ -1,6 +1,6 @@
 .\" Man page generated from reStructuredText.
 .
-.TH "H2LOAD" "1" "Feb 22, 2018" "1.31.0-DEV" "nghttp2"
+.TH "H2LOAD" "1" "Feb 27, 2018" "1.31.0" "nghttp2"
 .SH NAME
 h2load \- HTTP/2 benchmarking tool
 .
diff --git a/doc/nghttp.1 b/doc/nghttp.1
index 7dc56eb0..a53a5ac5 100644
--- a/doc/nghttp.1
+++ b/doc/nghttp.1
@@ -1,6 +1,6 @@
 .\" Man page generated from reStructuredText.
 .
-.TH "NGHTTP" "1" "Feb 22, 2018" "1.31.0-DEV" "nghttp2"
+.TH "NGHTTP" "1" "Feb 27, 2018" "1.31.0" "nghttp2"
 .SH NAME
 nghttp \- HTTP/2 client
 .
diff --git a/doc/nghttpd.1 b/doc/nghttpd.1
index 25ca1c31..bd2dbdb5 100644
--- a/doc/nghttpd.1
+++ b/doc/nghttpd.1
@@ -1,6 +1,6 @@
 .\" Man page generated from reStructuredText.
 .
-.TH "NGHTTPD" "1" "Feb 22, 2018" "1.31.0-DEV" "nghttp2"
+.TH "NGHTTPD" "1" "Feb 27, 2018" "1.31.0" "nghttp2"
 .SH NAME
 nghttpd \- HTTP/2 server
 .
diff --git a/doc/nghttpx.1 b/doc/nghttpx.1
index b5b05d54..3313e5c9 100644
--- a/doc/nghttpx.1
+++ b/doc/nghttpx.1
@@ -1,6 +1,6 @@
 .\" Man page generated from reStructuredText.
 .
-.TH "NGHTTPX" "1" "Feb 22, 2018" "1.31.0-DEV" "nghttp2"
+.TH "NGHTTPX" "1" "Feb 27, 2018" "1.31.0" "nghttp2"
 .SH NAME
 nghttpx \- HTTP/2 proxy
 .