diff --git a/lib/db.func b/lib/db.func
index f5d2473..14c3ce1 100644
--- a/lib/db.func
+++ b/lib/db.func
@@ -1119,7 +1119,9 @@ setup_mysql() {
   if [[ "$DISTRO_ID" == "debian" && "$DISTRO_CODENAME" =~ ^(trixie|forky|sid)$ ]]; then
     msg_info "Debian ${DISTRO_CODENAME} detected → using MySQL 8.4 LTS (libaio1t64 compatible)"
 
-    if ! download_gpg_key "https://repo.mysql.com/RPM-GPG-KEY-mysql-2023" "/etc/apt/keyrings/mysql.gpg" "dearmor"; then
+    # The 2023 key name expired on 2025-10-22; the 2025 file is the same key, extended.
+    # bookworm's packages need libaio1, which trixie no longer has.
+    if ! download_gpg_key "https://repo.mysql.com/RPM-GPG-KEY-mysql-2025" "/etc/apt/keyrings/mysql.gpg" "dearmor"; then
       msg_error "Failed to import MySQL GPG key"
       return 7
     fi
@@ -1127,7 +1129,7 @@ setup_mysql() {
     cat >/etc/apt/sources.list.d/mysql.sources <<EOF
 Types: deb
 URIs: https://repo.mysql.com/apt/debian/
-Suites: bookworm
+Suites: trixie
 Components: mysql-8.4-lts
 Architectures: $(dpkg --print-architecture)
 Signed-By: /etc/apt/keyrings/mysql.gpg
@@ -1169,7 +1171,7 @@ EOF
 
   # Setup repository
   manage_tool_repository "mysql" "$MYSQL_VERSION" "https://repo.mysql.com/apt/${DISTRO_ID}" \
-    "https://repo.mysql.com/RPM-GPG-KEY-mysql-2023" || {
+    "https://repo.mysql.com/RPM-GPG-KEY-mysql-2025" || {
     msg_error "Failed to setup MySQL repository"
     return 100
   }