diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 4130df0..7deae33 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.5.2"
+  ".": "1.6.0"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 14a057b..cfc67d0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 1.6.0 (2025-02-08)
+
+Full Changelog: [v1.5.2...v1.6.0](https://github.com/OneBusAway/python-sdk/compare/v1.5.2...v1.6.0)
+
+### Features
+
+* fix(tests): use urllib.parse.quote_plus for API key encoding in expected URLs ([41dfd84](https://github.com/OneBusAway/python-sdk/commit/41dfd84d5c705825fa4b0dea4d52b964b08921d0))
+
 ## 1.5.2 (2025-02-07)
 
 Full Changelog: [v1.5.1...v1.5.2](https://github.com/OneBusAway/python-sdk/compare/v1.5.1...v1.5.2)
diff --git a/pyproject.toml b/pyproject.toml
index b5eef14..b6726fe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "onebusaway"
-version = "1.5.2"
+version = "1.6.0"
 description = "The official Python library for the onebusaway-sdk API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/onebusaway/_version.py b/src/onebusaway/_version.py
index 598fdd1..2e9cdc6 100644
--- a/src/onebusaway/_version.py
+++ b/src/onebusaway/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "onebusaway"
-__version__ = "1.5.2"  # x-release-please-version
+__version__ = "1.6.0"  # x-release-please-version