diff --git a/.github/workflows/weekly-index.yml b/.github/workflows/weekly-index.yml
index 3d774b6..d5d45cf 100644
--- a/.github/workflows/weekly-index.yml
+++ b/.github/workflows/weekly-index.yml
@@ -104,7 +104,7 @@ jobs:
       - name: Build PhysLib
         if: steps.check.outputs.has_changes == 'true'
         run: cd physlib && lake exe cache get && lake build
-        timeout-minutes: 30
+        timeout-minutes: 90
 
       # jixia must be cloned before its cache step
       - name: Clone jixia