diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3237afd1..af948787 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## 5.6.0 - 2019-10-04
+* [#861](https://github.com/stripe/stripe-ruby/pull/861) Nicer error when specifying non-nil non-string opt value
+
 ## 5.5.0 - 2019-10-03
 * [#859](https://github.com/stripe/stripe-ruby/pull/859) User-friendly messages and retries for `EOFError`, `Errno::ECONNRESET`, `Errno::ETIMEDOUT`, and `Errno::EHOSTUNREACH` network errors
 
diff --git a/VERSION b/VERSION
index d50359de..1bc788d3 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.5.0
+5.6.0
diff --git a/lib/stripe/version.rb b/lib/stripe/version.rb
index f012e388..e23bc55a 100644
--- a/lib/stripe/version.rb
+++ b/lib/stripe/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Stripe
-  VERSION = "5.5.0"
+  VERSION = "5.6.0"
 end