diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8810872..a9e2308 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 Changelog
 =========
 
+## v3.1.1
+
+- Improved typing
+- Fixed a bug where position in iterator did not increase
+
 ## v3.1.0
 - started to use real whatwg streams
 - degraded fs/promise to fs.promise to support node v12
diff --git a/package.json b/package.json
index c379cc9..bc13e1a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "fetch-blob",
-    "version": "3.1.0",
+    "version": "3.1.1",
     "description": "Blob & File implementation in Node.js, originally from node-fetch.",
     "main": "index.js",
     "type": "module",