diff --git a/CHANGELOG.md b/CHANGELOG.md
index d0c3ee16..cf431108 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 2.9.3 - TBD
+## 2.9.3 - 2018-04-09
 
 ### Added
 
@@ -18,8 +18,10 @@ All notable changes to this project will be documented in this file, in reverse
 
 ### Fixed
 
-- [#79](https://github.com/zendframework/zend-log/pull/79) provides fixes to
-  ensure the `FingersCrossed` and `MongoDB` writers work under PHP 7.2.
+- [#79](https://github.com/zendframework/zend-log/pull/79) and
+  [#86](https://github.com/zendframework/zend-log/pull/86) provide fixes to
+  ensure the `FingersCrossed`, `Mongo`, and `MongoDB` writers work under PHP
+  7.2.
 
 ## 2.9.2 - 2017-05-17
 
diff --git a/src/Writer/Mongo.php b/src/Writer/Mongo.php
index 418477e2..c008c835 100644
--- a/src/Writer/Mongo.php
+++ b/src/Writer/Mongo.php
@@ -90,9 +90,10 @@ public function __construct($mongo, $database = null, $collection = null, array
      * This writer does not support formatting.
      *
      * @param string|FormatterInterface $formatter
+     * @param array|null $options (unused)
      * @return WriterInterface
      */
-    public function setFormatter($formatter)
+    public function setFormatter($formatter, array $options = null)
     {
         return $this;
     }