diff --git a/database/migrations/2026_07_30_000000_change_weight_column_back_to_integer_in_topic_projects_table.php b/database/migrations/2026_07_30_000000_change_weight_column_back_to_integer_in_topic_projects_table.php
new file mode 100644
index 0000000..d21d74f
--- /dev/null
+++ b/database/migrations/2026_07_30_000000_change_weight_column_back_to_integer_in_topic_projects_table.php
@@ -0,0 +1,22 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class ChangeWeightColumnBackToIntegerInTopicProjectsTable extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('topic_projects', function (Blueprint $table) {
+            $table->unsignedInteger('weight')->default(1)->change();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('topic_projects', function (Blueprint $table) {
+            $table->decimal('weight', 5, 2)->default(1)->change();
+        });
+    }
+}
diff --git a/src/Models/Project.php b/src/Models/Project.php
index 87693e2..6939856 100644
--- a/src/Models/Project.php
+++ b/src/Models/Project.php
@@ -73,7 +73,7 @@ class Project extends AbstractTopicContent
     protected $casts = [
         'notify_users' => 'array',
         'counts_to_grade' => 'boolean',
-        'weight' => 'float',
+        'weight' => 'integer',
         'max_score' => 'float',
     ];
 
@@ -95,7 +95,7 @@ public static function rules(): array
             'value' => ['required', 'string'],
             'notify_users' => ['array'],
             'counts_to_grade' => ['boolean'],
-            'weight' => ['numeric', 'min:0', 'max:100'],
+            'weight' => ['integer', 'min:0', 'max:100'],
             'max_score' => ['nullable', 'numeric', 'min:1'],
         ];
     }