diff --git a/src/Traits/HasRoles.php b/src/Traits/HasRoles.php
index a613866..3b6470e 100644
--- a/src/Traits/HasRoles.php
+++ b/src/Traits/HasRoles.php
@@ -15,14 +15,18 @@ trait HasRoles
      */
     public function roles()
     {
+        $pivotTable = config('roles.table_names.role_member', 'role_members');
+
         return $this->morphToMany(
             config('roles.models.role', \Blax\Roles\Models\Role::class),
             'member',
-            config('roles.table_names.role_members', 'role_members')
+            $pivotTable
         )->withPivot('expires_at', 'created_at', 'updated_at')
             ->withTimestamps()
-            ->wherePivot('expires_at', '>', now())
-            ->orWhereNull('expires_at');
+            ->where(function ($q) use ($pivotTable) {
+                $q->wherePivot('expires_at', '>', now())
+                    ->orWhereNull($pivotTable . '.expires_at');
+            });
     }
 
     /**
@@ -142,6 +146,58 @@ trait HasRoles
         return $this;
     }
 
+    /**
+     * Extend the expiration of an existing role by the given hours, or attach the role
+     * with an expiration if the member does not already have it.
+     * If the existing role has no expiration (expires_at is null), it will be left as-is.
+     *
+     * @param int|string|Role $role
+     * @param int $hours
+     * @return $this
+     */
+    public function extendOrAddRole($role, $hours)
+    {
+        $hours = (int) $hours;
+        if ($hours <= 0) {
+            return $this;
+        }
+
+        // Resolve role
+        if (is_string($role) && !is_numeric($role)) {
+            $role = config('roles.models.role', \Blax\Roles\Models\Role::class)::firstOrCreate([
+                'name' => $role,
+                'slug' => str()->slug($role)
+            ]);
+        } elseif (is_numeric($role)) {
+            $role = config('roles.models.role', \Blax\Roles\Models\Role::class)::find($role);
+        } elseif (!$role instanceof Role) {
+            throw new \InvalidArgumentException('Role must be a string, numeric ID, or an instance of Role.');
+        }
+
+        if (!$role) {
+            return $this;
+        }
+
+        $roleMemberModel = config('roles.models.role_member', \Blax\Roles\Models\RoleMember::class);
+
+        $existing = $roleMemberModel::withoutGlobalScopes()
+            ->where('role_id', $role->id)
+            ->where('member_id', $this->getKey())
+            ->where('member_type', $this->getMorphClass())
+            ->first();
+
+        if ($existing) {
+            // Extend expiry. If it does not expire (null), leave it unchanged.
+            $existing->extendByHours($hours, false);
+        } else {
+            $this->roles()->attach($role->id, [
+                'expires_at' => now()->addHours($hours),
+            ]);
+        }
+
+        return $this;
+    }
+
     /**
      * Checks if the memberable has any of the given roles
      *
diff --git a/src/Traits/WillExpire.php b/src/Traits/WillExpire.php
index a6ce3b5..3838bb2 100644
--- a/src/Traits/WillExpire.php
+++ b/src/Traits/WillExpire.php
@@ -14,9 +14,22 @@ trait WillExpire
         });
     }
 
-
     public function isExpired(): bool
     {
         return $this->expires_at && $this->expires_at->isPast();
     }
+
+    public function extendByHours(int $hours, bool $expire_if_null = false): void
+    {
+        if ($this->expires_at === null && !$expire_if_null) {
+            // Do not add expiration if it does not expire
+            return;
+        } elseif ($this->expires_at->isPast()) {
+            $this->expires_at = now()->addHours($hours);
+        } else {
+            $this->expires_at = $this->expires_at->addHours($hours);
+        }
+
+        $this->save();
+    }
 }