diff --git a/Dockerfile b/Dockerfile
index 0cea74e7..3b1978f7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Stage 1: Install Python dependencies
-FROM python:3.13-slim@sha256:1020ca463dc51c26bbad49de85dbb2986d93b71050102f3fa2a7f0fc4c2ea81e AS python-builder
+FROM python:3.13.5-slim@sha256:4c2cf9917bd1cbacc5e9b07320025bdb7cdf2df7b0ceaccb55e9dd7e30987419 AS python-builder
 
 WORKDIR /build
 
@@ -16,7 +16,7 @@ RUN set -eux; \
     pip install --no-cache-dir --timeout 1000 .
 
 # Stage 2: Runtime image
-FROM python:3.13-slim@sha256:1020ca463dc51c26bbad49de85dbb2986d93b71050102f3fa2a7f0fc4c2ea81e
+FROM python:3.13.5-slim@sha256:4c2cf9917bd1cbacc5e9b07320025bdb7cdf2df7b0ceaccb55e9dd7e30987419
 
 ARG UID=1000
 ARG GID=1000