diff --git a/CHANGELOG.md b/CHANGELOG.md
index 36adff81d5..1f12d5a565 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## 2020-12-11, v1.12.1
+
+This is a security release that prevents a hacker to execute code on the server.
+
 ## 2020-11-23, v1.12.0
 
 - Fix ro_RO first and last day of year calculation offset (#65)
diff --git a/src/Faker/Generator.php b/src/Faker/Generator.php
index e7c1417fac..836ed5bdd3 100644
--- a/src/Faker/Generator.php
+++ b/src/Faker/Generator.php
@@ -293,4 +293,9 @@ public function __destruct()
     {
         $this->seed();
     }
+
+    public function __wakeup()
+    {
+        $this->formatters = [];
+    }
 }