diff --git a/database/migrations/2023_05_12_071412_devices_expand_timetaken_doubles.php b/database/migrations/2023_05_12_071412_devices_expand_timetaken_doubles.php
new file mode 100644
index 0000000000..0e0e558ad1
--- /dev/null
+++ b/database/migrations/2023_05_12_071412_devices_expand_timetaken_doubles.php
@@ -0,0 +1,37 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('devices', function (Blueprint $table) {
+            $table->unsignedFloat('last_polled_timetaken')->nullable()->change();
+            $table->unsignedFloat('last_discovered_timetaken')->nullable()->change();
+            $table->unsignedFloat('last_ping_timetaken')->nullable()->change();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        // can't undo the places change
+        Schema::table('devices', function (Blueprint $table) {
+            $table->float('last_polled_timetaken')->nullable()->change();
+            $table->float('last_discovered_timetaken')->nullable()->change();
+            $table->float('last_ping_timetaken')->nullable()->change();
+        });
+    }
+};
diff --git a/misc/db_schema.yaml b/misc/db_schema.yaml
index aeb77b926a..b90218aa9e 100644
--- a/misc/db_schema.yaml
+++ b/misc/db_schema.yaml
@@ -530,11 +530,11 @@ devices:
     - { Field: agent_uptime, Type: 'int unsigned', 'Null': false, Extra: '', Default: '0' }
     - { Field: last_polled, Type: timestamp, 'Null': true, Extra: '' }
     - { Field: last_poll_attempted, Type: timestamp, 'Null': true, Extra: '' }
-    - { Field: last_polled_timetaken, Type: 'double(5,2)', 'Null': true, Extra: '' }
-    - { Field: last_discovered_timetaken, Type: 'double(5,2)', 'Null': true, Extra: '' }
+    - { Field: last_polled_timetaken, Type: 'double unsigned', 'Null': true, Extra: '' }
+    - { Field: last_discovered_timetaken, Type: 'double unsigned', 'Null': true, Extra: '' }
     - { Field: last_discovered, Type: timestamp, 'Null': true, Extra: '' }
     - { Field: last_ping, Type: timestamp, 'Null': true, Extra: '' }
-    - { Field: last_ping_timetaken, Type: 'double(8,2)', 'Null': true, Extra: '' }
+    - { Field: last_ping_timetaken, Type: 'double unsigned', 'Null': true, Extra: '' }
     - { Field: purpose, Type: text, 'Null': true, Extra: '' }
     - { Field: type, Type: varchar(20), 'Null': false, Extra: '', Default: '' }
     - { Field: serial, Type: text, 'Null': true, Extra: '' }