diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index fae799b..9efb0af 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ["latest"]
+        python-version: ["3.13"]
 
     steps:
       - name: Checkout
diff --git a/Dockerfile b/Dockerfile
index 182c834..71339a3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 ARG DEBIAN_VERSION=bookworm
 ARG UV_VERSION=latest
-ARG VARIANT=latest
+ARG VARIANT=3.13
 
 
 FROM ghcr.io/astral-sh/uv:$UV_VERSION AS uv