diff --git a/release/Dockerfile.ranger b/release/Dockerfile.ranger
index 4cf55a5..c6ceeab 100644
--- a/release/Dockerfile.ranger
+++ b/release/Dockerfile.ranger
@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 ARG RANGER_BASE_IMAGE=apache/ranger-base
-ARG RANGER_BASE_VERSION=20260123-2-8
+ARG RANGER_BASE_VERSION=20260806-2-8
 
 FROM ${RANGER_BASE_IMAGE}:${RANGER_BASE_VERSION} AS ranger
 
diff --git a/release/README.md b/release/README.md
index 4cad44e..b75c09e 100644
--- a/release/README.md
+++ b/release/README.md
@@ -26,7 +26,7 @@
 To build the images, run the following commands from the `release` directory:
 
 ```bash
-export RANGER_VERSION=2.8.0
+export RANGER_VERSION=2.9.0
 docker build -f Dockerfile.ranger-postgres -t ranger-db:latest .
 docker build -f Dockerfile.ranger-solr -t ranger-solr:latest .
 docker build --build-arg RANGER_VERSION=${RANGER_VERSION} -f Dockerfile.ranger -t ranger:latest .