diff --git a/zuul.d/master_jobs.yaml b/zuul.d/master_jobs.yaml
index d39b4b8..885e370 100644
--- a/zuul.d/master_jobs.yaml
+++ b/zuul.d/master_jobs.yaml
@@ -27,9 +27,9 @@
         NETWORK_API_EXTENSIONS: "{{ (network_api_extensions_common + network_api_extensions_tempest) | join(',') }}"
         PHYSICAL_NETWORK: public
         IMAGE_URLS: https://cloud-images.ubuntu.com/minimal/releases/focal/release/ubuntu-20.04-minimal-cloudimg-amd64.img
-        CIRROS_VERSION: 0.6.2
-        DEFAULT_IMAGE_NAME: cirros-0.6.2-x86_64-uec
-        DEFAULT_IMAGE_FILE_NAME: cirros-0.6.2-x86_64-uec.tar.gz
+        CIRROS_VERSION: 0.6.3
+        DEFAULT_IMAGE_NAME: cirros-0.6.3-x86_64-uec
+        DEFAULT_IMAGE_FILE_NAME: cirros-0.6.3-x86_64-uec.tar.gz
         ADVANCED_IMAGE_NAME: ubuntu-20.04-minimal-cloudimg-amd64
         ADVANCED_INSTANCE_TYPE: ntp_image_256M
         ADVANCED_INSTANCE_USER: ubuntu
@@ -829,9 +829,9 @@
         USE_PYTHON3: true
         NETWORK_API_EXTENSIONS: "{{ (network_api_extensions_common + network_api_extensions_dvr) | join(',') }}"
         PHYSICAL_NETWORK: default
-        CIRROS_VERSION: 0.6.2
-        DEFAULT_IMAGE_NAME: cirros-0.6.2-x86_64-uec
-        DEFAULT_IMAGE_FILE_NAME: cirros-0.6.2-x86_64-uec.tar.gz
+        CIRROS_VERSION: 0.6.3
+        DEFAULT_IMAGE_NAME: cirros-0.6.3-x86_64-uec
+        DEFAULT_IMAGE_FILE_NAME: cirros-0.6.3-x86_64-uec.tar.gz
         IMAGE_URLS: https://cloud-images.ubuntu.com/minimal/releases/focal/release/ubuntu-20.04-minimal-cloudimg-amd64.img
         ADVANCED_IMAGE_NAME: ubuntu-20.04-minimal-cloudimg-amd64
         ADVANCED_INSTANCE_TYPE: ntp_image_256M