diff --git a/NOTICE b/NOTICE
index 910765be7e20151b1c3a12fafb0175aee72e2330..a555b7ad163bc7af25ee926c841e867a82f5d3b4 100644
--- a/NOTICE
+++ b/NOTICE
@@ -279,7 +279,7 @@ The following software have components provided under the terms of this license:
 - sniffio (from https://github.com/python-trio/sniffio)
 - structlog (from http://www.structlog.org/)
 - toml (from https://github.com/uiri/toml)
-- tomli (from https://pypi.org/project/tomli/1.2.1/)
+- tomli (from https://pypi.org/project/tomli/1.2.2/)
 - urllib3 (from https://urllib3.readthedocs.io/)
 - xmltodict (from https://github.com/martinblech/xmltodict)
 - zipp (from https://github.com/jaraco/zipp)
diff --git a/build/Dockerfile b/build/Dockerfile
index 1ff5d1110e97149f9d128ceadabb63ab70239367..763fd66eb22698bb7aecf82d36f6131a87e51993 100644
--- a/build/Dockerfile
+++ b/build/Dockerfile
@@ -12,7 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM python:3.7-slim-buster
+# Using Debian 11 - bullseye, slim version as base OS
+FROM python:3.7-slim-bullseye 
 
 COPY requirements.txt ./