diff --git a/pg_repack/1.5/index.html b/pg_repack/1.5/index.html
index 52c08da..4f90d77 100644
--- a/pg_repack/1.5/index.html
+++ b/pg_repack/1.5/index.html
@@ -480,7 +480,9 @@ <h1 class="title">pg_repack 1.5.0 -- Reorganize tables in PostgreSQL databases w
 <h2>Requirements</h2>
 <dl class="docutils">
 <dt>PostgreSQL versions</dt>
-<dd>PostgreSQL 9.4, 9.5, 9.6, 10, 11, 12, 13, 14, 15</dd>
+<dd><p class="first">PostgreSQL 9.5, 9.6, 10, 11, 12, 13, 14, 15, 16.</p>
+<p class="last">PostgreSQL 9.4 and before it are not supported.</p>
+</dd>
 <dt>Disks</dt>
 <dd>Performing a full-table repack requires free disk space about twice as
 large as the target table(s) and its indexes. For example, if the total
diff --git a/pg_repack/index.html b/pg_repack/index.html
index a22d062..5bde682 100644
--- a/pg_repack/index.html
+++ b/pg_repack/index.html
@@ -480,7 +480,9 @@ <h1 class="title">pg_repack 1.5.0 -- Reorganize tables in PostgreSQL databases w
 <h2>Requirements</h2>
 <dl class="docutils">
 <dt>PostgreSQL versions</dt>
-<dd>PostgreSQL 9.4, 9.5, 9.6, 10, 11, 12, 13, 14, 15</dd>
+<dd><p class="first">PostgreSQL 9.5, 9.6, 10, 11, 12, 13, 14, 15, 16.</p>
+<p class="last">PostgreSQL 9.4 and before it are not supported.</p>
+</dd>
 <dt>Disks</dt>
 <dd>Performing a full-table repack requires free disk space about twice as
 large as the target table(s) and its indexes. For example, if the total
diff --git a/pg_repack/jp/index.html b/pg_repack/jp/index.html
index 3546b34..cf49e35 100644
--- a/pg_repack/jp/index.html
+++ b/pg_repack/jp/index.html
@@ -498,7 +498,9 @@ <h1 class="title">pg_repack 1.5.0 -- PostgreSQLデータベースのテーブル
 - - - - - - - - - - - -
 
 PostgreSQL versions
-    PostgreSQL 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 10
+    PostgreSQL 9.5, 9.6, 10, 11, 12, 13, 14, 15, 16.
+
+    PostgreSQL 9.4 and before it are not supported.
 
 Disks
     Performing a full-table repack requires free disk space about twice as
@@ -509,7 +511,7 @@ <h1 class="title">pg_repack 1.5.0 -- PostgreSQLデータベースのテーブル
 <h2>動作環境</h2>
 <dl class="docutils">
 <dt>PostgreSQL バージョン</dt>
-<dd>PostgreSQL 9.1, 9.2, 9.3, 9.4, 9.5, 9.6</dd>
+<dd>PostgreSQL 9.5, 9.6, 10, 11, 12, 13, 14, 15, 16</dd>
 <dt>ディスク</dt>
 <dd>テーブル全体の再編成を行うには、対象となるテーブルと付属するインデックスのおよそ2倍のサイズのディスク空き容量が必要です。例えば、テーブルとインデックスを合わせたサイズが1GBの場合、2GBのディスク領域が必要となります。</dd>
 </dl>
diff --git a/sm/master b/sm/master
index 78421dc..624745b 160000
--- a/sm/master
+++ b/sm/master
@@ -1 +1 @@
-Subproject commit 78421dcc30a59fb9fd9d7bfeda97009f7050f112
+Subproject commit 624745b4bf7df34ae614632c6d8d47da4a26eb1c