diff --git a/CHANGELOG.md b/CHANGELOG.md
index 63615a6..aad6ffa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+
+## [1.1.0-rc.4] - 2026-06-30
+
+### Changed
+* Dockerfile updated to use fully qualified Docker Hub reference for the Python base image
+
+
 ## [1.1.0-rc.3] - 2026-06-10
 
 ### Changed
diff --git a/src/VERSION b/src/VERSION
index b2d500d..61cb4de 100644
--- a/src/VERSION
+++ b/src/VERSION
@@ -1 +1 @@
-1.1.0-rc.3
+1.1.0-rc.4
diff --git a/src/infra/Dockerfile b/src/infra/Dockerfile
index 99affbf..cf92f40 100644
--- a/src/infra/Dockerfile
+++ b/src/infra/Dockerfile
@@ -4,7 +4,7 @@
 # =============================================================================
 # Fetcher stage: resolve dependencies and build wheels
 # =============================================================================
-FROM python:3.12-slim AS fetcher
+FROM docker.io/library/python:3.12-slim AS fetcher
 
 ARG POETRY_VERSION=">=2.0.0,<3.0.0"
 
@@ -28,7 +28,7 @@ RUN poetry export -f requirements.txt --output requirements.txt --without-hashes
 # =============================================================================
 # Builder stage: install wheels into a virtual environment
 # =============================================================================
-FROM python:3.12-slim AS builder
+FROM docker.io/library/python:3.12-slim AS builder
 
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1
@@ -58,7 +58,7 @@ RUN pip install --no-deps .
 # =============================================================================
 # Runtime stage: minimal production image
 # =============================================================================
-FROM python:3.12-slim AS runtime
+FROM docker.io/library/python:3.12-slim AS runtime
 
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1 \