diff --git a/CHANGELOG.md b/CHANGELOG.md
index 99471907d..2d9c7a2c4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,9 +1,12 @@
 # Changelog
 
+## 13.2.0 - 2024-11-20
+* [#1486](https://github.com/stripe/stripe-ruby/pull/1486) This release changes the pinned API version to `2024-11-20.acacia`.
+  * Add support for `respond` test helper method on resource `Issuing.Authorization`
+
 ## 13.2.0-beta.3 - 2024-11-14
 * [#1484](https://github.com/stripe/stripe-ruby/pull/1484) Update generated code for beta
 
-
 ## 13.2.0-beta.2 - 2024-11-07
 * [#1480](https://github.com/stripe/stripe-ruby/pull/1480) Update generated code for beta
   * Add support for new resources `Issuing.FraudLiabilityDebit`, `PaymentAttemptRecord`, and `PaymentRecord`
@@ -14,9 +17,11 @@
 * [#1477](https://github.com/stripe/stripe-ruby/pull/1477) Update generated code for beta
   * Add support for `trigger_action` method on resource `PaymentIntent`
 
+## 13.1.2 - 2024-11-15
+* [#1488](https://github.com/stripe/stripe-ruby/pull/1488) Fix incorrect key in param encoding
+
 ## 13.1.1 - 2024-11-06
 * [#1483](https://github.com/stripe/stripe-ruby/pull/1483) Fix APIResource#retrieve not sending `stripe_version`
-* [#1478](https://github.com/stripe/stripe-ruby/pull/1478) Update changelog with a note on 2024-10-28.acacia API version
 
 ## 13.1.0 - 2024-10-29
 * [#1472](https://github.com/stripe/stripe-ruby/pull/1472) This release changes the pinned API version to `2024-10-28.acacia`.
diff --git a/OPENAPI_VERSION b/OPENAPI_VERSION
index 71fc9b78c..038066775 100644
--- a/OPENAPI_VERSION
+++ b/OPENAPI_VERSION
@@ -1 +1 @@
-v1345
\ No newline at end of file
+v1370
\ No newline at end of file
diff --git a/lib/stripe/util.rb b/lib/stripe/util.rb
index 8ddd948c2..af672a7d9 100644
--- a/lib/stripe/util.rb
+++ b/lib/stripe/util.rb
@@ -259,7 +259,7 @@ def self.flatten_params_array(value, api_mode, calculated_key)
         if elem.is_a?(Hash)
           result += flatten_params(elem, api_mode, "#{calculated_key}[#{i}]")
         elsif elem.is_a?(Array)
-          result += flatten_params_array(elem, calculated_key, api_mode)
+          result += flatten_params_array(elem, api_mode, calculated_key)
         else
           result << if api_mode == :v2
                       [calculated_key, elem]
diff --git a/test/stripe/util_test.rb b/test/stripe/util_test.rb
index 900c37fb3..8e5f56082 100644
--- a/test/stripe/util_test.rb
+++ b/test/stripe/util_test.rb
@@ -16,6 +16,7 @@ class UtilTest < Test::Unit::TestCase
 
           # NOTE: the empty hash won't even show up in the request
           g: [],
+
         }
         assert_equal(
           "a=3&b=%2Bfoo%3F&c=bar%26baz&d[a]=a&d[b]=b&e[0]=0&e[1]=1&f=",
@@ -23,6 +24,16 @@ class UtilTest < Test::Unit::TestCase
         )
       end
 
+      should "correctly represent nested arrays" do
+        params = {
+          a: [[foo: "bar", baz: "qux"]],
+        }
+        assert_equal(
+          "a[0][foo]=bar&a[0][baz]=qux",
+          Stripe::Util.encode_parameters(params, :v1)
+        )
+      end
+
       should "use correct array expansion for v2 query params" do
         params = {
           d: { a: "a", b: "b" },