diff --git a/lib/Database.php b/lib/Database.php
index f961f7d..b2a7aa3 100644
--- a/lib/Database.php
+++ b/lib/Database.php
@@ -322,8 +322,8 @@ class Database {
         }
         $tr = $this->begin();
         $find = $this->db->prepare("SELECT count(*) from arsse_user_meta where owner = ? and \"key\" = ?", "str", "strict str");
-        $update = $this->db->prepare("UPDATE arsse_user_meta set value = ? where owner = ? and \"key\" = ?", "str", "str", "str");
-        $insert = $this->db->prepare("INSERT INTO arsse_user_meta values(?, ?, ?)", "str", "strict str", "str");
+        $update = $this->db->prepare("UPDATE arsse_user_meta set value = ?, modified = CURRENT_TIMESTAMP where owner = ? and \"key\" = ?", "str", "str", "str");
+        $insert = $this->db->prepare("INSERT INTO arsse_user_meta(owner, \"key\", value) values(?, ?, ?)", "str", "strict str", "str");
         foreach ($data as $k => $v) {
             if ($k === "admin") {
                 $this->db->prepare("UPDATE arsse_users SET admin = ? where id = ?", "bool", "str")->run($v, $user);
diff --git a/sql/MySQL/6.sql b/sql/MySQL/6.sql
index 23ba5ed..36b2d6e 100644
--- a/sql/MySQL/6.sql
+++ b/sql/MySQL/6.sql
@@ -22,6 +22,7 @@ alter table arsse_users modify num bigint unsigned not null;
 create table arsse_user_meta(
     owner varchar(255) not null,
     "key" varchar(255) not null,
+    modified datetime(0) not null default CURRENT_TIMESTAMP,
     value longtext,
     foreign key(owner) references arsse_users(id) on delete cascade on update cascade,
     primary key(owner,"key")
diff --git a/sql/PostgreSQL/6.sql b/sql/PostgreSQL/6.sql
index 0b405a2..a32eb0c 100644
--- a/sql/PostgreSQL/6.sql
+++ b/sql/PostgreSQL/6.sql
@@ -23,6 +23,7 @@ alter table arsse_users alter column num set not null;
 create table arsse_user_meta(
     owner text not null references arsse_users(id) on delete cascade on update cascade,
     key text not null,
+    modified timestamp(0) without time zone not null default CURRENT_TIMESTAMP,
     value text,
     primary key(owner,key)
 );
diff --git a/sql/SQLite3/6.sql b/sql/SQLite3/6.sql
index 9e86182..81e9e82 100644
--- a/sql/SQLite3/6.sql
+++ b/sql/SQLite3/6.sql
@@ -34,6 +34,7 @@ create table arsse_user_meta(
     -- It is up to individual applications (i.e. the client protocols) to cooperate with names and types
     owner text not null references arsse_users(id) on delete cascade on update cascade,     -- the user to whom the metadata belongs
     key text not null,                                                                      -- metadata key
+    modified text not null default CURRENT_TIMESTAMP,                                       -- time at which the metadata was last changed
     value text,                                                                             -- metadata value
     primary key(owner,key)
 ) without rowid;