diff --git a/CHANGES.rst b/CHANGES.rst
index 2ad8e5cff..d33678a20 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -12,7 +12,7 @@ Changes
 
 Changes:
 --------
-- No change.
+- Update Docker image Python from 3.10 to 3.11 for performance improvements.
 
 Fixes:
 ------
diff --git a/docker/Dockerfile-base b/docker/Dockerfile-base
index 7580ae971..5d33a3510 100644
--- a/docker/Dockerfile-base
+++ b/docker/Dockerfile-base
@@ -1,4 +1,4 @@
-FROM python:3.10-slim
+FROM python:3.11-slim
 LABEL description.short="Weaver Base"
 LABEL description.long="Workflow Execution Management Service (EMS); Application, Deployment and Execution Service (ADES)"
 LABEL maintainer="Francis Charette-Migneault <francis.charette-migneault@crim.ca>"