diff --git a/CHANGES.md b/CHANGES.md
index c184a35..29b105b 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -8,7 +8,7 @@ Known issues:
 
 ## bunyan 0.22.2 (not yet released)
 
-(nothing yet)
+- Update 'mv' optional dep to latest.
 
 
 ## bunyan 0.22.1
diff --git a/package.json b/package.json
index 4746b55..61d354b 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   },
   "// comment": "'mv' required for RotatingFileStream",
   "optionalDependencies": {
-    "mv": "0.0.5",
+    "mv": "~2",
     "dtrace-provider": "0.2.8"
   },
   "devDependencies": {