diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 029e2d7c..a2375392 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.2.2"
+  ".": "1.2.3"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 55749b5c..3665821f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 1.2.3 (2025-11-21)
+
+Full Changelog: [v1.2.2...v1.2.3](https://github.com/OneBusAway/ruby-sdk/compare/v1.2.2...v1.2.3)
+
+### Chores
+
+* explicitly require "base64" gem ([9a4b451](https://github.com/OneBusAway/ruby-sdk/commit/9a4b4511aeba5c3b272b4d2f70154c87583c3a5e))
+
 ## 1.2.2 (2025-11-05)
 
 Full Changelog: [v1.2.1...v1.2.2](https://github.com/OneBusAway/ruby-sdk/compare/v1.2.1...v1.2.2)
diff --git a/Gemfile.lock b/Gemfile.lock
index b30051f0..7652d672 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GIT
 PATH
   remote: .
   specs:
-    onebusaway-sdk (1.2.2)
+    onebusaway-sdk (1.2.3)
       connection_pool
 
 GEM
diff --git a/README.md b/README.md
index 750fb360..7a4c28cf 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ To use this gem, install via Bundler by adding the following to your application
 <!-- x-release-please-start-version -->
 
 ```ruby
-gem "onebusaway-sdk", "~> 1.2.2"
+gem "onebusaway-sdk", "~> 1.2.3"
 ```
 
 <!-- x-release-please-end -->
diff --git a/lib/onebusaway_sdk.rb b/lib/onebusaway_sdk.rb
index 0fedbe76..0fe3835a 100644
--- a/lib/onebusaway_sdk.rb
+++ b/lib/onebusaway_sdk.rb
@@ -3,6 +3,7 @@
 # Standard libraries.
 # rubocop:disable Lint/RedundantRequireStatement
 require "English"
+require "base64"
 require "cgi"
 require "date"
 require "erb"
diff --git a/lib/onebusaway_sdk/version.rb b/lib/onebusaway_sdk/version.rb
index 10a13bf9..57b99498 100644
--- a/lib/onebusaway_sdk/version.rb
+++ b/lib/onebusaway_sdk/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module OnebusawaySDK
-  VERSION = "1.2.2"
+  VERSION = "1.2.3"
 end
diff --git a/manifest.yaml b/manifest.yaml
index 7853f4ab..a1fd74a9 100644
--- a/manifest.yaml
+++ b/manifest.yaml
@@ -1,5 +1,6 @@
 dependencies:
   - English
+  - base64
   - cgi
   - date
   - erb