diff --git a/.github/workflows/book.yml b/.github/workflows/book.yml
index 08760823..b16cd640 100644
--- a/.github/workflows/book.yml
+++ b/.github/workflows/book.yml
@@ -37,6 +37,7 @@ jobs:
     - name: list contents
       run: |
         find . -name 223p.ttl
+        pwd
 
     - name: build examples
       run: |