diff --git a/CHANGELOG.md b/CHANGELOG.md
index 90a9a73..ae83f66 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## 1.4.0
+* Feature - Add sts_endpoint param for custom STS API endpoint (#39)
+
 ## 1.3.0
 * Feature - Add experimental concurrency feature (#33)
 
diff --git a/VERSION b/VERSION
index f0bb29e..88c5fb8 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.3.0
+1.4.0