diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 42c8a94f..26ff36e6 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1 +1 @@
-{"api/python":"0.8.0","ontology-assets":"0.5.0",".":"0.0.1"}
+{"api/python":"1.0.0","ontology-assets":"1.0.0",".":"0.0.1"}
diff --git a/api/python/CHANGELOG.md b/api/python/CHANGELOG.md
index ea0a47a7..984948b2 100644
--- a/api/python/CHANGELOG.md
+++ b/api/python/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## [1.0.0](https://github.com/chanzuckerberg/cellxgene-ontology-guide/compare/python-api-v0.8.0...python-api-v1.0.0) (2024-05-15)
+
+
+### Features
+
+* update ontology_info.json for 5.1 ([#207](https://github.com/chanzuckerberg/cellxgene-ontology-guide/issues/207)) ([d5c8ae3](https://github.com/chanzuckerberg/cellxgene-ontology-guide/commit/d5c8ae3f0502f0ca7165f821f384d553e2ed3e0b))
+
+
+### Misc
+
+* release 1.0.0 ([60eef67](https://github.com/chanzuckerberg/cellxgene-ontology-guide/commit/60eef67d69fa3f4f776e67eeefef27391a307785))
+
 ## [0.8.0](https://github.com/chanzuckerberg/cellxgene-ontology-guide/compare/python-api-v0.7.1...python-api-v0.8.0) (2024-04-15)
 
 
diff --git a/api/python/pyproject.toml b/api/python/pyproject.toml
index 3d2ab3fb..b7fd541d 100644
--- a/api/python/pyproject.toml
+++ b/api/python/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "cellxgene_ontology_guide"
-version = "0.8.0"
+version = "1.0.0"
 description = "Access ontology metadata used by CZ cellxgene"
 authors = [
     { name = "Chan Zuckerberg Initiative Foundation", email = "cellxgene@chanzuckerberg.com" }
diff --git a/api/python/src/cellxgene_ontology_guide/__init__.py b/api/python/src/cellxgene_ontology_guide/__init__.py
index 2d0c94d4..99732fe3 100644
--- a/api/python/src/cellxgene_ontology_guide/__init__.py
+++ b/api/python/src/cellxgene_ontology_guide/__init__.py
@@ -19,5 +19,5 @@
 .. include:: ../../CHANGELOG.md
 """
 
-__version__ = "0.8.0"
+__version__ = "1.0.0"
 __all__ = ["curated_ontology_term_lists", "entities", "ontology_parser", "supported_versions"]
diff --git a/ontology-assets/CHANGELOG.md b/ontology-assets/CHANGELOG.md
index 376bd4b5..0d8854fa 100644
--- a/ontology-assets/CHANGELOG.md
+++ b/ontology-assets/CHANGELOG.md
@@ -1,5 +1,19 @@
 # Changelog
 
+## [1.0.0](https://github.com/chanzuckerberg/cellxgene-ontology-guide/compare/ontology-assets-v0.5.0...ontology-assets-v1.0.0) (2024-05-15)
+
+
+### Features
+
+* update ontology_info.json for 5.1 ([#207](https://github.com/chanzuckerberg/cellxgene-ontology-guide/issues/207)) ([d5c8ae3](https://github.com/chanzuckerberg/cellxgene-ontology-guide/commit/d5c8ae3f0502f0ca7165f821f384d553e2ed3e0b))
+
+
+### Misc
+
+* release 1.0.0 ([60eef67](https://github.com/chanzuckerberg/cellxgene-ontology-guide/commit/60eef67d69fa3f4f776e67eeefef27391a307785))
+* update ontology descendant mappings ([#202](https://github.com/chanzuckerberg/cellxgene-ontology-guide/issues/202)) ([b41948b](https://github.com/chanzuckerberg/cellxgene-ontology-guide/commit/b41948b5ca97888e4107c487f99cb120a68c9932))
+* update ontology descendant mappings ([#205](https://github.com/chanzuckerberg/cellxgene-ontology-guide/issues/205)) ([94157d0](https://github.com/chanzuckerberg/cellxgene-ontology-guide/commit/94157d072afd094393365a8610e85fb26b55f3ef))
+
 ## [0.5.0](https://github.com/chanzuckerberg/cellxgene-ontology-guide/compare/ontology-assets-v0.4.0...ontology-assets-v0.5.0) (2024-04-15)