diff --git a/samba/CHANGELOG.md b/samba/CHANGELOG.md
index 670d2148..55b90164 100644
--- a/samba/CHANGELOG.md
+++ b/samba/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 13.0.0
+
+- BREAKING: `enabled_shares` values must now be lower case. The schema
+  restricts values to the exact share names and the configuration UI offers
+  them as a multi-select. Configs saved on 12.8.1 or later were migrated
+  automatically; older configs with non-lower-case values fail validation
+  with a clear error and must be re-selected.
+
 ## 12.8.1
 
 - Normalize stored `enabled_shares` values to lower case at startup. Values
diff --git a/samba/config.yaml b/samba/config.yaml
index 51b16cc4..c2ae32a3 100644
--- a/samba/config.yaml
+++ b/samba/config.yaml
@@ -1,5 +1,5 @@
 ---
-version: 12.8.1
+version: 13.0.0
 slug: samba
 name: Samba share
 description: Expose Home Assistant folders with SMB/CIFS
@@ -54,7 +54,7 @@ schema:
   password: password
   workgroup: str
   enabled_shares:
-    - "match(^(?i:(addons|addon_configs|backup|config|media|share|ssl))$)"
+    - "list(addons|addon_configs|backup|config|media|share|ssl)"
   compatibility_mode: bool
   apple_compatibility_mode: bool
   netbios: bool
diff --git a/samba/rootfs/etc/s6-overlay/s6-rc.d/init-smbd/run b/samba/rootfs/etc/s6-overlay/s6-rc.d/init-smbd/run
index 8bf03527..d9d0b4ab 100755
--- a/samba/rootfs/etc/s6-overlay/s6-rc.d/init-smbd/run
+++ b/samba/rootfs/etc/s6-overlay/s6-rc.d/init-smbd/run
@@ -8,8 +8,6 @@ declare password
 declare username
 declare config_username
 declare samba_username
-declare stored_options
-declare migration_payload
 declare -a interfaces=()
 export HOSTNAME
 
@@ -23,19 +21,6 @@ fi
 
 bashio::config.require "enabled_shares" "Samba is a tool for sharing folders. Starting it without sharing any folders defeats the purpose."
 
-# Migrate stored enabled_shares values to lower case. Values have always
-# been treated case-insensitively at runtime; persisting them lower case
-# prepares for a future release that restricts the schema to the exact
-# share names.
-stored_options=$(bashio::api.supervisor GET /addons/self/info false | jq '.options')
-if jq -e '(.enabled_shares // []) | any(. != ascii_downcase)' <<< "${stored_options}" > /dev/null; then
-    bashio::log.info "Migrating enabled_shares configuration values to lower case"
-    migration_payload=$(jq -c '{options: (.enabled_shares |= map(ascii_downcase))}' <<< "${stored_options}")
-    if ! bashio::api.supervisor POST /addons/self/options "${migration_payload}"; then
-        bashio::log.warning "Could not migrate enabled_shares values; will retry on next start"
-    fi
-fi
-
 # Read hostname from API or setting default "hassio"
 HOSTNAME=$(bashio::info.hostname)
 if bashio::var.is_empty "${HOSTNAME}"; then
@@ -64,7 +49,6 @@ fi
 
 jq --arg username "${samba_username}" \
     ".interfaces = $(jq -c -n '$ARGS.positional' --args -- "${interfaces[@]}") |
-    .enabled_shares.[] |= ascii_downcase |
     .username = \$username" /data/options.json \
     | tempio \
       -template /usr/share/tempio/smb.gtpl \
diff --git a/samba/translations/en.yaml b/samba/translations/en.yaml
index 43ba9a80..6561132c 100644
--- a/samba/translations/en.yaml
+++ b/samba/translations/en.yaml
@@ -12,14 +12,8 @@ configuration:
     name: Workgroup
     description: Change WORKGROUP to reflect your network needs.
   enabled_shares:
-    name: >-
-      Enabled Shares - allowed values are:
-      addons, addon_configs, backup, config, media, share, or ssl.
-    description: >-
-      List of file shares to make available.
-      Adding a share requires typing its name to add it.
-      The listed values are the only allowed values.
-      The configuration cannot be saved if any non-allowed value is in the list.
+    name: Enabled Shares
+    description: List of file shares to make available.
   compatibility_mode:
     name: Enable Compatibility Mode
     description: >-