diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3a129b6..e5ef735 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,6 +13,7 @@ defaults:
     shell: "pwsh"
 env:
   UV_CACHE_DIR: ".cache/uv"
+  UV_SYSTEM_PYTHON: "true"
 jobs:
   sync:
     strategy:
diff --git a/.github/workflows/contrib.yml b/.github/workflows/contrib.yml
index f8256bf..fd47469 100644
--- a/.github/workflows/contrib.yml
+++ b/.github/workflows/contrib.yml
@@ -20,6 +20,7 @@ defaults:
     shell: "pwsh"
 env:
   UV_CACHE_DIR: ".cache/uv"
+  UV_SYSTEM_PYTHON: "true"
   SYNC_PY_DISABLE_CI: True
 jobs:
   no-spaces-in-path:
diff --git a/.github/workflows/high.yml b/.github/workflows/high.yml
index 92f987d..ff9ed65 100644
--- a/.github/workflows/high.yml
+++ b/.github/workflows/high.yml
@@ -9,6 +9,7 @@ defaults:
     shell: "pwsh"
 env:
   UV_CACHE_DIR: ".cache/uv"
+  UV_SYSTEM_PYTHON: "true"
   SYNC_PY_HIGH: "true"
 jobs:
   sync:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index aaa1168..d29c3a8 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -9,6 +9,9 @@ on:
 defaults:
   run:
     shell: "pwsh"
+env:
+  UV_CACHE_DIR: ".cache/uv"
+  UV_SYSTEM_PYTHON: "true"
 jobs:
   release:
     permissions: