diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 650ed9dd..a89c6ba1 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -4,6 +4,8 @@ on:
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
+env:
+  UV_SYSTEM_PYTHON: true
 jobs:
   lint:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/coverage.yaml b/.github/workflows/coverage.yaml
index d7338ad4..7310e6fd 100644
--- a/.github/workflows/coverage.yaml
+++ b/.github/workflows/coverage.yaml
@@ -4,6 +4,8 @@ on:
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
+env:
+  UV_SYSTEM_PYTHON: true
 jobs:
   cov:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 3ceb385b..6aef2b91 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -3,6 +3,8 @@ on:
   push:
     tags:
       - "v*.*.*"
+env:
+  UV_SYSTEM_PYTHON: true
 jobs:
   default:
     runs-on: ubuntu-latest
diff --git a/.github/workflows/site.yaml b/.github/workflows/site.yaml
index 23e90177..bc91aa28 100644
--- a/.github/workflows/site.yaml
+++ b/.github/workflows/site.yaml
@@ -4,6 +4,8 @@ on:
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
+env:
+  UV_SYSTEM_PYTHON: true
 jobs:
   preview:
     runs-on: ubuntu-latest