diff --git a/airflow/version.py b/airflow/version.py
index db66eb8f9dc47..b4905580a37f3 100644
--- a/airflow/version.py
+++ b/airflow/version.py
@@ -13,4 +13,4 @@
 # limitations under the License.
 #
 
-version = '1.9.0rc4'
+version = '1.9.0rc5'