diff --git a/install.sh b/install.sh
index 7186dd32f..c2fda5569 100755
--- a/install.sh
+++ b/install.sh
@@ -1,10 +1,22 @@
 #!/usr/bin/env bash
-# Remove this script (install.sh) after 2025.12.01
+# TODO: Remove this script (install.sh) after 2025.12.01
 
 STY_RED='\e[31m'
 STY_RST='\e[00m'
-printf "${STY_RED}You are using \"./install.sh\" which is kept for compatibility and will be removed in future.\n"
-printf "Please use \"./setup install\" instead.${STY_RST}\n"
+STY_INVERT='\e[7m'
+
+printf "${STY_RED}"
+printf "========================================================================\n"
+printf "${STY_INVERT}"
+printf "! ATTENTION !"
+printf "${STY_RST}\n"
+printf "${STY_RED}"
+printf "You are using \"./install.sh\" which is kept for compatibility.\n"
+printf "Please use \"./setup install\" instead.\n"
+printf "The old \"./install.sh\" is planned to be removed after 2025.12.01.\n"
+printf "========================================================================\n"
+printf "${STY_RST}"
+sleep 5
 
 cd "$(dirname "$0")"
 ./setup install "$@"
diff --git a/update.sh b/update.sh
new file mode 100755
index 000000000..6a4cb2e42
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+# TODO: Remove this script (update.sh) after 2025.12.01
+
+STY_RED='\e[31m'
+STY_RST='\e[00m'
+STY_INVERT='\e[7m'
+
+printf "${STY_RED}"
+printf "========================================================================\n"
+printf "${STY_INVERT}"
+printf "! ATTENTION !"
+printf "${STY_RST}\n"
+printf "${STY_RED}"
+printf "You are using \"./update.sh\" which is kept for compatibility.\n"
+printf "Please use \"./setup exp-update-old\" or \"./setup exp-update\" instead.\n"
+printf "The old \"./update.sh\" is planned to be removed after 2025.12.01.\n"
+printf "========================================================================\n"
+printf "${STY_RST}"
+sleep 5
+
+cd "$(dirname "$0")"
+./setup exp-update-old "$@"