diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bf015400..a187ba3c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -4,26 +4,26 @@ on:
   push:
     branches:
       - master
+      - REL_18_STABLE
       - REL_17_STABLE
       - REL_16_STABLE
       - REL_15_STABLE
       - REL_14_STABLE
-      - REL_13_STABLE
   pull_request:
     branches:
       - master
+      - REL_18_STABLE
       - REL_17_STABLE
       - REL_16_STABLE
       - REL_15_STABLE
       - REL_14_STABLE
-      - REL_13_STABLE
 
 jobs:
   build:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     env:
-      CACHE_VERSION: 20250128  # to identify cache version
+      CACHE_VERSION: 20260112  # to identify cache version
 
     steps:
     - name: get current branch name
@@ -39,12 +39,12 @@ jobs:
       shell: bash -xe {0}
       run: |
         declare -A versions=(
-          ["master"]="17.5"
-          ["REL_17_STABLE"]="17.5"
-          ["REL_16_STABLE"]="16.9"
-          ["REL_15_STABLE"]="15.13"
-          ["REL_14_STABLE"]="14.18"
-          ["REL_13_STABLE"]="13.21"
+          ["master"]="18.1"
+          ["REL_18_STABLE"]="18.1"
+          ["REL_17_STABLE"]="17.7"
+          ["REL_16_STABLE"]="16.11"
+          ["REL_15_STABLE"]="15.15"
+          ["REL_14_STABLE"]="14.20"
         )
         [ -z "${versions[${{ env.BRANCH }}]}" ] && exit 1         # check if the key exists
         echo "PGVERSION=${versions[${{ env.BRANCH }}]}" >> $GITHUB_ENV
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c44ad9d1..0b5d0726 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         RHEL_VERSION: ["8", "9", "10"]
-        PG_VERSION: ["13", "14", "15", "16", "17"]
+        PG_VERSION: ["14", "15", "16", "17", "18"]
     steps:
     - name: Checkout repository
       uses: actions/checkout@v4
diff --git a/README.md b/README.md
index 8a07ad2c..9fd603a5 100644
--- a/README.md
+++ b/README.md
@@ -14,12 +14,12 @@ different PostgreSQL server versions without introducing server version
 check code blocks.  Please choose a branch to match the PostgreSQL version
 you will be building pg_rman against.
 
-* master : branch for PostgreSQL 18 [![Test](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml/badge.svg?branch=master&event=push)](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml)
+* master : branch for PostgreSQL 19 [![Test](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml/badge.svg?branch=master&event=push)](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml)
+* REL_18_STABLE : branch for PostgreSQL 18 [![Test](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml/badge.svg?branch=REL_18_STABLE&event=push)](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml)
 * REL_17_STABLE : branch for PostgreSQL 17 [![Test](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml/badge.svg?branch=REL_17_STABLE&event=push)](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml)
 * REL_16_STABLE : branch for PostgreSQL 16 [![Test](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml/badge.svg?branch=REL_16_STABLE&event=push)](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml)
 * REL_15_STABLE : branch for PostgreSQL 15 [![Test](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml/badge.svg?branch=REL_15_STABLE&event=push)](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml)
 * REL_14_STABLE : branch for PostgreSQL 14 [![Test](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml/badge.svg?branch=REL_14_STABLE&event=push)](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml)
-* REL_13_STABLE : branch for PostgreSQL 13 [![Test](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml/badge.svg?branch=REL_13_STABLE&event=push)](https://github.com/ossc-db/pg_rman/actions/workflows/build.yml)
 
 How to use
 ----------
diff --git a/docs/index-ja.html b/docs/index-ja.html
index 61033a4e..20636901 100644
--- a/docs/index-ja.html
+++ b/docs/index-ja.html
@@ -1459,7 +1459,7 @@ <h2>RPMを用いたインストール</h2>
 <h1 id="requirement">動作環境</h2>
 <dl>
 <dt>PostgreSQLバージョン</dt>
-<dd>PostgreSQL 13, 14, 15, 16, 17</dd>
+<dd>PostgreSQL 14, 15, 16, 17, 18</dd>
 <dt>OS</dt>
 <dd>RHEL 8, 9, 10</dd>
 </dl>
diff --git a/docs/index.html b/docs/index.html
index 21139f4d..47c08e5f 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -1449,7 +1449,7 @@ <h2 id="Install.from.rpm">Install from rpm package</h2>
 <h1 id="requirement">Requirements</h1>
 <dl>
 <dt>PostgreSQL</dt>
-<dd>PostgreSQL 13, 14, 15, 16, 17</dd>
+<dd>PostgreSQL 14, 15, 16, 17, 18</dd>
 <dt>OS</dt>
 <dd>RHEL 8, 9, 10</dd>
 </dl>
diff --git a/expected/option.out b/expected/option.out
index 582e7f90..5d0cf1ac 100644
--- a/expected/option.out
+++ b/expected/option.out
@@ -75,7 +75,7 @@ Report bugs to <http://github.com/ossc-db/pg_rman/issues>.
 
 ###### COMMAND OPTION TEST-0002 ######
 ###### version option ######
-pg_rman 1.3.18
+pg_rman 1.3.19
 1
 
 ###### COMMAND OPTION TEST-0003 ######
diff --git a/pg_rman.c b/pg_rman.c
index 0b66906f..23518c94 100644
--- a/pg_rman.c
+++ b/pg_rman.c
@@ -14,7 +14,7 @@
 #include <time.h>
 #include <sys/stat.h>
 
-const char *PROGRAM_VERSION	= "1.3.18";
+const char *PROGRAM_VERSION	= "1.3.19";
 const char *PROGRAM_URL		= "http://github.com/ossc-db/pg_rman";
 const char *PROGRAM_ISSUES	= "http://github.com/ossc-db/pg_rman/issues";