diff --git a/app/TermsOfUseVersion.php b/app/TermsOfUseVersion.php
index e4472407..1d40439c 100644
--- a/app/TermsOfUseVersion.php
+++ b/app/TermsOfUseVersion.php
@@ -13,8 +13,14 @@
 class TermsOfUseVersion extends Model {
     use HasFactory;
 
+    protected $primaryKey = 'version';
+
+    protected $keyType = 'string';
+
     protected $table = 'tou_versions';
 
+    public $incrementing = false;
+
     const FIELDS = [
         'version',
         'active',
diff --git a/database/migrations/2025_10_14_091126_tou_versions.php b/database/migrations/2026_01_06_131233_tou_version.php
similarity index 95%
rename from database/migrations/2025_10_14_091126_tou_versions.php
rename to database/migrations/2026_01_06_131233_tou_version.php
index c7aa71d9..07c41480 100644
--- a/database/migrations/2025_10_14_091126_tou_versions.php
+++ b/database/migrations/2026_01_06_131233_tou_version.php
@@ -10,7 +10,6 @@
      */
     public function up(): void {
         Schema::create('tou_versions', function (Blueprint $table) {
-            $table->id();
             $table->string('version')->unique();
             $table->boolean('active')->default(false);
             $table->timestamps();
diff --git a/database/migrations/2025_09_29_194758_tou_acceptances.php b/database/migrations/2026_01_06_131319_tou_acceptances.php
similarity index 76%
rename from database/migrations/2025_09_29_194758_tou_acceptances.php
rename to database/migrations/2026_01_06_131319_tou_acceptances.php
index bbc1e76c..57041849 100644
--- a/database/migrations/2025_09_29_194758_tou_acceptances.php
+++ b/database/migrations/2026_01_06_131319_tou_acceptances.php
@@ -12,11 +12,16 @@ public function up(): void {
         Schema::create('tou_acceptances', function (Blueprint $table) {
             $table->id();
             $table->unsignedInteger('user_id');
-            $table->string('tou_version', 10);
+            $table->string('tou_version');
             $table->timestamp('tou_accepted_at');
             $table->timestamps();
             $table->unique(['user_id', 'tou_version']);
             $table->foreign('user_id')->references('id')->on('users')->cascadeOnDelete();
+            $table->foreign('tou_version')
+                ->references('version')
+                ->on('tou_versions')
+                ->cascadeOnUpdate()
+                ->restrictOnDelete();
         });
     }