diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 4c81962..5fdd883 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.0.10"
+  ".": "1.1.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c8825c0..11db6f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.1.0](https://github.com/HydrologicEngineeringCenter/cwms-python/compare/v1.0.10...v1.1.0) (2026-09-25)
+
+
+### Features
+
+* REGI-499: Project Sublocation Endpoints ([#306](https://github.com/HydrologicEngineeringCenter/cwms-python/issues/306)) ([1a0d115](https://github.com/HydrologicEngineeringCenter/cwms-python/commit/1a0d1150e6e7b1dd109ea24c5aef9f846cb1081a))
+
 ## [1.0.10](https://github.com/HydrologicEngineeringCenter/cwms-python/compare/v1.0.9...v1.0.10) (2026-09-11)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 0142c2b..ad0e5eb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ name = "cwms-python"
 repository = "https://github.com/HydrologicEngineeringCenter/cwms-python"
 
 # Managed by Release Please; runtime versions come from package metadata.
-version = "1.0.10"
+version = "1.1.0"
 
 packages = [
     { include = "cwms" },