diff --git a/backend/Dockerfile.base b/backend/Dockerfile.base
index 8515ceb1..1a8dc211 100644
--- a/backend/Dockerfile.base
+++ b/backend/Dockerfile.base
@@ -1,6 +1,6 @@
 # Shared base image for all backend services
 # Contains: Python, system deps, uv, and all Python dependencies
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 WORKDIR /app
 
diff --git a/backend/Dockerfile.test b/backend/Dockerfile.test
index 515d95fa..f2982f2c 100644
--- a/backend/Dockerfile.test
+++ b/backend/Dockerfile.test
@@ -1,5 +1,5 @@
 # Test runner container - lightweight, uses same network as services
-FROM python:3.12-slim
+FROM python:3.14-slim
 
 WORKDIR /app