diff --git a/HISTORY.md b/HISTORY.md
index 9765f08..abb252e 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,3 +1,8 @@
+unreleased
+==========
+
+  * deps: ipaddr.js@1.9.1
+
 2.0.5 / 2019-04-16
 ==================
 
diff --git a/package.json b/package.json
index d96d899..aa5bcdb 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "repository": "jshttp/proxy-addr",
   "dependencies": {
     "forwarded": "~0.1.2",
-    "ipaddr.js": "1.9.0"
+    "ipaddr.js": "1.9.1"
   },
   "devDependencies": {
     "benchmark": "2.1.4",