diff --git a/.release-please-individual-manifest.json b/.release-please-individual-manifest.json
index f2c7a16c5aa1..32a56e4588ca 100644
--- a/.release-please-individual-manifest.json
+++ b/.release-please-individual-manifest.json
@@ -6,7 +6,7 @@
   "packages/google-cloud-spanner-dbapi-driver": "0.0.0",
   "packages/google-cloud-sql": "0.1.1",
   "packages/google-cloud-workloadidentity": "0.1.0",
-  "packages/google-crc32c": "1.8.0",
+  "packages/google-crc32c": "1.9.0-rc0",
   "packages/google-maps-mapmanagement": "0.1.1",
   "packages/google-shopping-merchant-loyaltycustomers": "0.1.1",
   "preview-packages/google-cloud-compute": "1.51.0-preview.1"
diff --git a/librarian.yaml b/librarian.yaml
index 58143336e171..9bea7911c7be 100644
--- a/librarian.yaml
+++ b/librarian.yaml
@@ -2304,7 +2304,7 @@ libraries:
       metadata_name_override: workstations
       default_version: v1
   - name: google-crc32c
-    version: 1.8.0
+    version: 1.9.0-rc0
     skip_release: true
     python:
       library_type: OTHER
diff --git a/packages/google-crc32c/CHANGELOG.md b/packages/google-crc32c/CHANGELOG.md
index aa9140456f8b..f40af94bb245 100644
--- a/packages/google-crc32c/CHANGELOG.md
+++ b/packages/google-crc32c/CHANGELOG.md
@@ -4,6 +4,32 @@
 
 [1]: https://pypi.org/project/google-crc32c/#history
 
+## [1.9.0-rc0](https://github.com/googleapis/google-cloud-python/compare/google-crc32c-v1.8.0...google-crc32c-v1.9.0-rc0) (2026-09-23)
+
+
+### Features
+
+* add unit and cover nox sessions and enforce 100% test coverage for ([9d2e62f](https://github.com/googleapis/google-cloud-python/commit/9d2e62faea7f812a4564c56034eb32113f41edba)), refs [#17052](https://github.com/googleapis/google-cloud-python/issues/17052)
+* **crc32c:** add Python 3.15 classifier ([08291df](https://github.com/googleapis/google-cloud-python/commit/08291df4d20f8742a1f139ff3b896ff8485f567d))
+* **crc32c:** add Python 3.15 wheel build support ([#18416](https://github.com/googleapis/google-cloud-python/issues/18416)) ([47b2845](https://github.com/googleapis/google-cloud-python/commit/47b2845c8b4113fd0633242c439d150b8f684888))
+* **crc32c:** add unit and cover nox sessions ([#18424](https://github.com/googleapis/google-cloud-python/issues/18424)) ([9d2e62f](https://github.com/googleapis/google-cloud-python/commit/9d2e62faea7f812a4564c56034eb32113f41edba))
+
+
+### Bug Fixes
+
+* bump pip from 26.1.1 to 26.2 in /packages/google-crc32c/scripts ([#18259](https://github.com/googleapis/google-cloud-python/issues/18259)) ([ef272c7](https://github.com/googleapis/google-cloud-python/commit/ef272c7ebeef65304c441a8d5136464cc0bd202c))
+* **crc32c:** escape the version dot and anchor the pyenv check regex ([#17555](https://github.com/googleapis/google-cloud-python/issues/17555)) ([b6a0275](https://github.com/googleapis/google-cloud-python/commit/b6a027513422507f99662c840068249b84522a5c))
+
+
+### Documentation
+
+* **handwritten:** centralize CONTRIBUTING.rst pointers ([#17642](https://github.com/googleapis/google-cloud-python/issues/17642)) ([23b9499](https://github.com/googleapis/google-cloud-python/commit/23b94994bd5251493b81d91657d1f79a5d3c4b97))
+
+
+### Miscellaneous Chores
+
+* **crc32c:** document Python 3.15 wheel support ([#18442](https://github.com/googleapis/google-cloud-python/issues/18442)) ([72c6a57](https://github.com/googleapis/google-cloud-python/commit/72c6a5716b8c4f7ecdf185b0da87960192acf578))
+
 ## [1.8.0](https://github.com/googleapis/python-crc32c/compare/v1.7.1...v1.8.0) (2025-12-15)
 
 
diff --git a/packages/google-crc32c/pyproject.toml b/packages/google-crc32c/pyproject.toml
index ae0125823dca..2c199b37579f 100644
--- a/packages/google-crc32c/pyproject.toml
+++ b/packages/google-crc32c/pyproject.toml
@@ -18,7 +18,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "google-crc32c"
-version = "1.8.0"
+version = "1.9.0-rc0"
 description = "A python wrapper of the C library 'Google CRC32C'"
 readme = "README.md"
 requires-python = ">=3.10"