diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ce7220c..d5ebe62 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,6 +38,8 @@ jobs:
       - name: Set up uv
         uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
         with:
+          version: "0.12.6"
+          download-from-astral-mirror: false
           enable-cache: true
 
       - name: Restore JavaScript dependencies
diff --git a/.github/workflows/dependency-audit.yml b/.github/workflows/dependency-audit.yml
index b401410..521d5a9 100644
--- a/.github/workflows/dependency-audit.yml
+++ b/.github/workflows/dependency-audit.yml
@@ -74,7 +74,8 @@ jobs:
       - name: Set up uv
         uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
         with:
-          version: "0.11.30"
+          version: "0.12.6"
+          download-from-astral-mirror: false
           enable-cache: true
 
       - name: Export the frozen Python dependency graph
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 94e8127..82f0910 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -42,6 +42,8 @@ jobs:
       - name: Set up uv
         uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
         with:
+          version: "0.12.6"
+          download-from-astral-mirror: false
           enable-cache: true
 
       - name: Import required Authenticode certificate