diff --git a/scripts/update-schema-latest.sh b/scripts/update-schema-latest.sh
new file mode 100755
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+++ b/scripts/update-schema-latest.sh
@@ -0,0 +1,354 @@
+#!/bin/sh
+#
+# OVERVIEW
+# --------
+#
+#   For the version 3.1 and higher:
+#
+#     This script does the following.
+#
+#       1. Switch to the 'gh-pages' branch.
+#
+#       2. Copy "schemas/v{major}.{minor}/schema.json" in the 'main' branch to
+#          "oas/{major}.{minor}/schema/{YYYY-MM-DD}" in the 'gh-pages' branch.
+#          The value of {YYYY-MM-DD} is extracted from the '$id' property in
+#          the schema.json file.
+#
+#       3. Create a symbolic link "latest" under "oas/{major}.{minor}/schema"
+#          that points to the "{YYYY-MM-DD}" file.
+#
+#       4. Copy "schemas/v{major}.{minor}/schema-base.json" in the 'main' branch to
+#          "oas/{major}.{minor}/schema-base/{YYYY-MM-DD}" in the 'gh-pages' branch.
+#          The value of {YYYY-MM-DD} is extracted from the '$id' property in
+#          the schema-base.json file.
+#
+#       5. Create a symbolic link "latest" under "oas/{major}.{minor}/schema-base"
+#          that points to the "{YYYY-MM-DD}" file.
+#
+#   For the version 3.0:
+#
+#     This script does the following.
+#
+#       1. Switch to the 'gh-pages' branch.
+#
+#       2. Copy "schemas/v{major}.{minor}/schema.json" in the 'main' branch to
+#          "oas/{major}.{minor}/schema/{YYYY-MM-DD}" in the 'gh-pages' branch.
+#          The value of {YYYY-MM-DD} is extracted from the 'id' property in
+#          the schema.json file.
+#
+#       3. Create a symbolic link "latest" under "oas/{major}.{minor}/schema"
+#          that points to the "{YYYY-MM-DD}" file.
+#
+#   For versions older than 3.0:
+#
+#     This script does not support versions older than 3.0.
+#
+# USAGE
+# -----
+#
+#   update-schema-latest.sh -v VERSION [options]
+#
+#      -v VERSION
+#          specifies the target version in the 'major.minor' format.
+#          For example, '-v 3.1'. This option is mandatory.
+#          Versions older than 3.0 are not supported.
+#
+#      -n
+#          turns on the dry-run mode that shows commands to execute but does not
+#          actually execute them.
+#
+#      -q
+#          turns on the quiet mode.
+#
+#      -h
+#          shows this help.
+#
+# EXAMPLE 1 (3.1 or higher)
+# -------------------------
+#
+#   ./scripts/update-schema-latest.sh -v 3.1
+#
+#   If the above command line is executed, the following external commands
+#   are invoked by the script. This example assumes that the value of the
+#   '$id' property in the schema files ends with '2022-10-07'.
+#
+#     git checkout gh-pages
+#
+#     git show main:schemas/v3.1/schema.json > oas/3.1/schema/2022-10-07
+#
+#     (cd oas/3.1/schema && ln -sf 2022-10-07 latest)
+#
+#     git show main:schemas/v3.1/schema-base.json > oas/3.1/schema-base/2022-10-07
+#
+#     (cd oas/3.1/schema-base && ln -sf 2022-10-07 latest)
+#
+# EXAMPLE 2 (3.0)
+# ---------------
+#
+#   ./scripts/update-schema-latest.sh -v 3.0
+#
+#   If the above command line is executed, the following external commands
+#   are invoked by the script. This example assumes that the value of the
+#   'id' property in the schema files ends with '2021-09-28'.
+#
+#     git checkout gh-pages
+#
+#     git show main:schemas/v3.0/schema.json > oas/3.0/schema/2021-09-28
+#
+#     (cd oas/3.0/schema && ln -sf 2021-09-28 latest)
+#
+# NOTE
+# ----
+#
+#   This script requires the following external commands.
+#
+#     - git
+#     - jq
+#
+
+
+#------------------------------------------------------------
+# Global Variables
+#------------------------------------------------------------
+__var_version=
+__var_major=
+__var_minor=
+__var_dry_run=off
+__var_quiet=off
+
+
+#------------------------------------------------------------
+# __main
+#------------------------------------------------------------
+__main()
+{
+    # Process the command line options.
+    __process_options "$@"
+
+    # 1. Check out the 'gh-pages' branch.
+    __checkout_gh_pages
+
+    # 2. Copy main:schemas/v{major}.{minor}/schema.json to
+    #    oas/{major}.{minor}/schema/YYYY-MM-DD.
+    #
+    # 3. Update oas/{major}.{minor}/schema/latest (symlink) to
+    #    make it point to YYYY-MM-DD.
+    __update_schema
+
+    # If the version is 3.1 or higher.
+    if [ ${__var_major} -gt 3 ] || [ ${__var_minor} -ge 1 ]; then
+        # 4. Copy main:schemas/v{major}.{minor}/schema-base.json to
+        #    oas/{major}.{minor}/schema-base/YYYY-MM-DD.
+        #
+        # 5. Update oas/{major}.{minor}/schema-base/latest (symlink) to
+        #    make it point to YYYY-MM-DD.
+        __update_schema_base
+    fi
+}
+
+
+#------------------------------------------------------------
+# __process_options
+#------------------------------------------------------------
+__process_options()
+{
+    while getopts v:nqh option
+    do
+        case $option in
+            # Version in the '{major}.{minor}' format.
+            v)
+                __var_version="${OPTARG}"
+                ;;
+
+            # Dry-Run Mode
+            n)
+                __var_dry_run=on
+                ;;
+
+            # Quiet Mode
+            q)
+                __var_quiet=on
+                ;;
+
+            # Help
+            h)
+                __help
+                exit 0
+                ;;
+
+            # Unknown Option
+            *)
+                # The error message is printed by 'getopts'.
+                exit 1
+                ;;
+        esac
+    done
+
+    __validate_version "${__var_version}"
+}
+
+
+#------------------------------------------------------------
+# __help
+#------------------------------------------------------------
+__help()
+{
+    cat <<__HELP__
+
+USAGE:
+
+    $0 -v VERSION [options]
+
+OPTIONS:
+
+    -v VERSION
+        specifies the target version in the 'major.minor' format.
+        For example, '-v 3.1'. This option is mandatory.
+        Versions older than 3.0 are not supported.
+
+    -n
+        turns on the dry-run mode that shows commands to execute but does not
+        actually execute them.
+
+    -q
+        turns on the quiet mode.
+
+    -h
+        shows this help.
+
+__HELP__
+}
+
+
+#------------------------------------------------------------
+# __error_exit
+#------------------------------------------------------------
+__error_exit()
+{
+    echo "ERROR: $1" >&2
+    exit 1
+}
+
+
+#------------------------------------------------------------
+# __validate_version
+#------------------------------------------------------------
+__validate_version()
+{
+    version="$1"
+
+    # If the -v option is not specified.
+    if [ -z "${version}" ]; then
+        __error_exit "The '-v VERSION' option must be specified."
+    fi
+
+    # If the argument of the -v option does not match the expected format.
+    if ! expr "${version}" : '[0-9][0-9]*\.[0-9][0-9]*$' >/dev/null; then
+        __error_exit "The format of the version specified by the -v option is invalid."
+    fi
+
+    # Extract the major number and the minor number.
+    __var_major=`echo ${version} | cut -f 1 -d .`
+    __var_minor=`echo ${version} | cut -f 2 -d .`
+
+    # If the major number is less than 3.
+    if [ ${__var_major} -lt 3 ]; then
+        __error_exit "This script does not support versions older than 3.0."
+    fi
+}
+
+
+#------------------------------------------------------------
+# __execute_command
+#------------------------------------------------------------
+__execute_command()
+{
+    command="$1"
+
+    # If the quiet mode is off.
+    if [ "${__var_quiet}" = "off" ]; then
+        # Print the command.
+        echo "${command}"
+    fi
+
+    # If the dry-run mode is off.
+    if [ "${__var_dry_run}" = "off" ]; then
+        # Execute the command.
+        sh -c "${command}"
+    fi
+}
+
+
+#------------------------------------------------------------
+# __checkout_gh_pages
+#------------------------------------------------------------
+__checkout_gh_pages()
+{
+    # The command to checkout the 'gh-pages' branch.
+    command="git checkout gh-pages"
+
+    # Execute the command.
+    __execute_command "${command}"
+}
+
+
+#------------------------------------------------------------
+# __update_schema
+#------------------------------------------------------------
+__update_schema()
+{
+    __update "schema"
+}
+
+
+#------------------------------------------------------------
+# __update_schema_base
+#------------------------------------------------------------
+__update_schema_base()
+{
+    __update "schema-base"
+}
+
+
+#------------------------------------------------------------
+# __update
+#------------------------------------------------------------
+__update()
+{
+    file_base="$1"
+
+    # The source file in the 'main' branch.
+    src_file="schemas/v${__var_version}/${file_base}.json"
+
+    # If the version is 3.0.
+    if [ ${__var_major} -eq 3 ] && [ ${__var_minor} -eq 0 ]; then
+        # Extract the 'YYYY-MM-DD' part of the "id" property.
+        date=`git show main:${src_file} | jq -rj '."id"|split("/")|last'`
+    else
+        # Extract the 'YYYY-MM-DD' part of the "$id" property.
+        date=`git show main:${src_file} | jq -rj '."$id"|split("/")|last'`
+    fi
+
+    # The destination directory in the 'gh-pages' branch.
+    dst_dir="oas/${__var_version}/${file_base}"
+
+    # The destination file in the 'gh-pages' branch.
+    dst_file="${dst_dir}/${date}"
+
+    # The command to copy the source file to the destination file.
+    copy_command="git show main:${src_file} > ${dst_file}"
+
+    # The command to update the 'latest' file.
+    link_command="cd ${dst_dir} && ln -sf ${date} latest"
+
+    # Execute the commands.
+    __execute_command "${copy_command}"
+    __execute_command "${link_command}"
+}
+
+
+#------------------------------------------------------------
+# Entry Point
+#------------------------------------------------------------
+__main "$@"
+exit 0