diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index da59f99..2aca35a 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.4.0"
+  ".": "0.5.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 43b9aae..da5fed2 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 2
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/isaacus%2Fisaacus-213d554b23f35e746460af23dd32bdde471230549ad223518c86d42ea917a180.yml
-openapi_spec_hash: 3672281fe031a42fc59e3a2af758a8f8
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/isaacus%2Fisaacus-f1ac3a46ba560544c348931204998163a9c5e35c40d6096f4b078e38c2714756.yml
+openapi_spec_hash: c9ba9f53c0dabdb703461d772020952f
 config_hash: 1d15d860383a3f6da1ac388297687cc9
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4789767..8e22a49 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## 0.5.0 (2025-04-19)
+
+Full Changelog: [v0.4.0...v0.5.0](https://github.com/isaacus-dev/isaacus-python/compare/v0.4.0...v0.5.0)
+
+### ⚠ BREAKING CHANGES
+
+* **api:** changed how end offsets are computed
+
+### Features
+
+* **api:** changed how end offsets are computed ([3c96279](https://github.com/isaacus-dev/isaacus-python/commit/3c962792d88ec5abd6ee71d9388cc1a1ba6a80dd))
+
 ## 0.4.0 (2025-04-19)
 
 Full Changelog: [v0.3.3...v0.4.0](https://github.com/isaacus-dev/isaacus-python/compare/v0.3.3...v0.4.0)
diff --git a/pyproject.toml b/pyproject.toml
index 8b27e05..7aafeb0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "isaacus"
-version = "0.4.0"
+version = "0.5.0"
 description = "The official Python library for the isaacus API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/isaacus/_version.py b/src/isaacus/_version.py
index 0d9b4ca..3375585 100644
--- a/src/isaacus/_version.py
+++ b/src/isaacus/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "isaacus"
-__version__ = "0.4.0"  # x-release-please-version
+__version__ = "0.5.0"  # x-release-please-version
diff --git a/src/isaacus/types/classifications/universal_classification.py b/src/isaacus/types/classifications/universal_classification.py
index ead7f39..5674c28 100644
--- a/src/isaacus/types/classifications/universal_classification.py
+++ b/src/isaacus/types/classifications/universal_classification.py
@@ -10,8 +10,9 @@
 class ClassificationChunk(BaseModel):
     end: int
     """
-    The index of the character in the original text where the chunk ends, beginning
-    from `0` (such that, in Python, the chunk is equivalent to `text[start:end+1]`).
+    The index of the character immediately after the last character of the chunk in
+    the original text, beginning from `0` (such that, in Python, the chunk is
+    equivalent to `text[start:end]`).
     """
 
     index: int