diff --git a/api/Dockerfile b/api/Dockerfile
index 624c698..46763a6 100644
--- a/api/Dockerfile
+++ b/api/Dockerfile
@@ -1,5 +1,5 @@
 # ── Builder ───────────────────────────────────────────────────────────────────
-FROM python:3.14-slim@sha256:44dd04494ee8f3b538294360e7c4b3acb87c8268e4d0a4828a6500b1eff50061 AS builder
+FROM python:3.14-slim@sha256:b877e50bd90de10af8d82c57a022fc2e0dc731c5320d762a27986facfc3355c1 AS builder
 WORKDIR /build
 RUN pip install --no-cache-dir uv
 COPY pyproject.toml uv.lock ./
@@ -8,7 +8,7 @@ RUN uv export --frozen --no-dev -o requirements.txt && \
     /venv/bin/pip install --no-cache-dir -r requirements.txt
 
 # ── Runtime ───────────────────────────────────────────────────────────────────
-FROM python:3.14-slim@sha256:44dd04494ee8f3b538294360e7c4b3acb87c8268e4d0a4828a6500b1eff50061
+FROM python:3.14-slim@sha256:b877e50bd90de10af8d82c57a022fc2e0dc731c5320d762a27986facfc3355c1
 WORKDIR /app
 RUN apt-get update && apt-get install -y --no-install-recommends curl && \
     apt-get upgrade -y && rm -rf /var/lib/apt/lists/* && \
diff --git a/ml-service/Dockerfile b/ml-service/Dockerfile
index 3dd0283..7075653 100644
--- a/ml-service/Dockerfile
+++ b/ml-service/Dockerfile
@@ -1,5 +1,5 @@
 # ── Builder ───────────────────────────────────────────────────────────────────
-FROM python:3.14-slim@sha256:44dd04494ee8f3b538294360e7c4b3acb87c8268e4d0a4828a6500b1eff50061 AS builder
+FROM python:3.14-slim@sha256:b877e50bd90de10af8d82c57a022fc2e0dc731c5320d762a27986facfc3355c1 AS builder
 WORKDIR /build
 RUN pip install --no-cache-dir uv
 COPY pyproject.toml uv.lock ./
@@ -8,7 +8,7 @@ RUN uv export --frozen --no-dev -o requirements.txt && \
     /venv/bin/pip install --no-cache-dir -r requirements.txt
 
 # ── Runtime ───────────────────────────────────────────────────────────────────
-FROM python:3.14-slim@sha256:44dd04494ee8f3b538294360e7c4b3acb87c8268e4d0a4828a6500b1eff50061
+FROM python:3.14-slim@sha256:b877e50bd90de10af8d82c57a022fc2e0dc731c5320d762a27986facfc3355c1
 WORKDIR /app
 RUN apt-get update && apt-get upgrade -y --no-install-recommends && rm -rf /var/lib/apt/lists/* && \
     adduser --disabled-password --gecos "" appuser && \
diff --git a/sync-service/Dockerfile b/sync-service/Dockerfile
index da679d2..dfcbb28 100644
--- a/sync-service/Dockerfile
+++ b/sync-service/Dockerfile
@@ -1,5 +1,5 @@
 # ── Builder ───────────────────────────────────────────────────────────────────
-FROM python:3.14-slim@sha256:44dd04494ee8f3b538294360e7c4b3acb87c8268e4d0a4828a6500b1eff50061 AS builder
+FROM python:3.14-slim@sha256:b877e50bd90de10af8d82c57a022fc2e0dc731c5320d762a27986facfc3355c1 AS builder
 WORKDIR /build
 RUN pip install --no-cache-dir uv
 COPY pyproject.toml uv.lock ./
@@ -8,7 +8,7 @@ RUN uv export --frozen --no-dev -o requirements.txt && \
     /venv/bin/pip install --no-cache-dir -r requirements.txt
 
 # ── Runtime ───────────────────────────────────────────────────────────────────
-FROM python:3.14-slim@sha256:44dd04494ee8f3b538294360e7c4b3acb87c8268e4d0a4828a6500b1eff50061
+FROM python:3.14-slim@sha256:b877e50bd90de10af8d82c57a022fc2e0dc731c5320d762a27986facfc3355c1
 WORKDIR /app
 RUN apt-get update && apt-get upgrade -y --no-install-recommends && rm -rf /var/lib/apt/lists/* && \
     adduser --disabled-password --gecos "" appuser