diff --git a/.github/workflows/test-build.yml b/.github/workflows/test-build.yml
index a1ea584841..3d398e7509 100644
--- a/.github/workflows/test-build.yml
+++ b/.github/workflows/test-build.yml
@@ -23,6 +23,9 @@ on:
         required: false
         default: ""
 
+env:
+  UV_THREADPOOL_SIZE: 8
+
 jobs:
   test:
     name: Build site for testing