diff --git a/composer/blog/gcp-tech-blog/unit-test-dags-cloud-build/Dockerfile b/composer/blog/gcp-tech-blog/unit-test-dags-cloud-build/Dockerfile
index 9e181e51a40..da7bbd1e75b 100644
--- a/composer/blog/gcp-tech-blog/unit-test-dags-cloud-build/Dockerfile
+++ b/composer/blog/gcp-tech-blog/unit-test-dags-cloud-build/Dockerfile
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM python:3.9
+FROM python:3.14.1
 
 # Allow statements and log messages to immediately appear in the Cloud Run logs
 ENV PYTHONUNBUFFERED True