diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 27320d4..6353efd 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "8.1.0-alpha.0"
+  ".": "8.1.0-alpha.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7e894f..d0222d3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+## [8.1.0-alpha.1](https://github.com/MapColonies/raster-shared/compare/v8.1.0-alpha.0...v8.1.0-alpha.1) (2026-05-05)
+
+
+### Features
+
+* add polygon parts schema and types for intersection api ([#193](https://github.com/MapColonies/raster-shared/issues/193)) ([440f0c5](https://github.com/MapColonies/raster-shared/commit/440f0c52714a559747be55da3eadf76459dfdc3d))
+
 ## [8.1.0-alpha.0](https://github.com/MapColonies/raster-shared/compare/v8.0.0-alpha.0...v8.1.0-alpha.0) (2026-05-04)
 
 
diff --git a/package-lock.json b/package-lock.json
index b40a214..dba6e46 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@map-colonies/raster-shared",
-  "version": "8.1.0-alpha.0",
+  "version": "8.1.0-alpha.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@map-colonies/raster-shared",
-      "version": "8.1.0-alpha.0",
+      "version": "8.1.0-alpha.1",
       "license": "ISC",
       "dependencies": {
         "@map-colonies/mc-priority-queue": "^9.1.0",
diff --git a/package.json b/package.json
index 8bff6a9..7ab5ffb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@map-colonies/raster-shared",
-  "version": "8.1.0-alpha.0",
+  "version": "8.1.0-alpha.1",
   "description": "This is template for map colonies typescript packages",
   "main": "./dist/index.js",
   "exports": {