diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 92f8374..6d5251c 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:bookworm-main
+        base_image: python:v3-bookworm-main
     - id: preflight
       uses: kpfleming/composite-actions/ci-preflight@v2
       with:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 681c12b..46a71ab 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -28,7 +28,7 @@ jobs:
       run: hatch build -t wheel
       shell: bash
     - name: install project
-      run: hatch run ci.py${{ inputs.python }}:pip install dist/*.whl
+      run: hatch run ci.py${{ inputs.python }}:uv pip install dist/*.whl
       shell: bash
     - name: run tests
       run: hatch run ci.py${{ inputs.python }}:ci
diff --git a/pyproject.toml b/pyproject.toml
index f871097..ebc06e7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -80,6 +80,10 @@ packages = [
 
 [tool.hatch.envs.default]
 python = "3.12"
+installer = "uv"
+python-sources = [
+  "external",
+]
 
 [tool.hatch.envs.lint]
 dependencies = [
@@ -122,7 +126,6 @@ python = [
   "3.10",
   "3.11",
   "3.12",
-  "3.13",
 ]
 
 [tool.hatch.envs.ci.scripts]
diff --git a/workflow-support/make_ci_image.sh b/workflow-support/make_ci_image.sh
index e80131e..c35f592 100755
--- a/workflow-support/make_ci_image.sh
+++ b/workflow-support/make_ci_image.sh
@@ -19,11 +19,10 @@ image_name=${1}; shift
 dist_name=${1}; shift
 
 lint_deps=(shellcheck)
-proj_deps=(libsqlite3-0)
-proj_build_deps=(build-essential libc6-dev pkg-config)
+proj_deps=()
+proj_build_deps=()
 
 hatchenvs=(lint ci)
-cimatrix=(3.8 3.9 3.10 3.11 3.12 3.13)
 
 c=$(buildah from "${base_image}")
 
@@ -41,27 +40,20 @@ build_cmd apt install --yes --quiet=2 "${lint_deps[@]}" "${proj_deps[@]}" "${pro
 for env in "${hatchenvs[@]}"; do
     # this looks weird... but it causes Hatch to create the env,
     # install all of the project's dependencies and the project,
-    # then runs pip to uninstall the project, leaving the env
+    # then runs 'uv pip' to uninstall the project, leaving the env
     # in place with the dependencies
-    case "${env}" in
-	ci*)
-	    for py in "${cimatrix[@]}"; do
-		build_cmd_with_source hatch env create "${env}.py${py}"
-		build_cmd_with_source hatch -e "${env}.py${py}" run pip uninstall --yes "${dist_name}"
-	    done
-	;;
-	*)
-	    build_cmd_with_source hatch env create "${env}"
-	    build_cmd_with_source hatch -e "${env}" run pip uninstall --yes "${dist_name}"
-	;;
-    esac
+    build_cmd_with_source hatch env create "${env}"
+    build_cmd_with_source hatch -e "${env}" run uv pip uninstall "${dist_name}"
 done
 
-build_cmd apt remove --yes --purge "${proj_build_deps[@]}"
+if [ -n "${proj_build_deps[*]}" ]
+then
+    build_cmd apt remove --yes --purge "${proj_build_deps[@]}"
+fi
 build_cmd apt autoremove --yes --purge
 build_cmd apt clean autoclean
 build_cmd sh -c "rm -rf /var/lib/apt/lists/*"
-build_cmd rm -rf /root/.cache
+build_cmd uv cache clean
 
 if buildah images --quiet "${image_name}"; then
     buildah rmi "${image_name}"
diff --git a/workflow-support/versions.json b/workflow-support/versions.json
index 53437db..2dc44cb 100644
--- a/workflow-support/versions.json
+++ b/workflow-support/versions.json
@@ -1 +1 @@
-versions={"python": ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]}
+versions={"python": ["3.8", "3.9", "3.10", "3.11", "3.12"]}