diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index da899a0..4281d80 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,7 +31,7 @@ jobs:
     - id: details
       uses: kpfleming/composite-actions/image-details@v2
       with:
-        base_image: python:v3-bookworm-main
+        base_image: python:v4-bookworm-main
     - id: preflight
       uses: kpfleming/composite-actions/ci-preflight@v2
       with:
diff --git a/pyproject.toml b/pyproject.toml
index 7b80a22..6cb46cc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -79,7 +79,7 @@ packages = [
 ]
 
 [tool.hatch.envs.default]
-python = "3.12"
+python = "3.13"
 installer = "uv"
 python-sources = [
   "external",
@@ -127,6 +127,7 @@ python = [
   "3.11",
   "3.12",
   "3.13",
+  "3.14",
 ]
 
 [tool.hatch.envs.ci.scripts]
diff --git a/workflow-support/versions.json b/workflow-support/versions.json
index 8b6e5f8..6f1e258 100644
--- a/workflow-support/versions.json
+++ b/workflow-support/versions.json
@@ -1 +1 @@
-versions={"python": ["3.9", "3.10", "3.11", "3.12", "3.13"]}
+versions={"python": ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]}