diff --git a/.tool-versions b/.tool-versions
index 504f142..60d2f02 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1 @@
-python 3.11
+python 3.13.1
diff --git a/Dockerfile b/Dockerfile
index a26ac94..087ca33 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,12 +1,12 @@
 # build python venv
-FROM python:3.11-alpine AS build-python
+FROM python:3.13-alpine AS build-python
 RUN apk update && apk add --no-cache gcc musl-dev python3-dev libffi-dev openssl-dev cargo \
     py3-brotli brotli brotli-dev brotli-libs g++
 RUN pip install --no-cache-dir --upgrade pip wheel
 COPY requirements.txt /
 RUN pip install --no-cache-dir --user --prefer-binary -r requirements.txt
 
-FROM python:3.11-alpine
+FROM python:3.13-alpine
 COPY --from=build-python /root/.local /usr/local
 # Make sure scripts in /usr/local/bin are usable:
 ENV PATH=/usr/local/bin:$PATH