diff --git a/.github/workflows/make.yml b/.github/workflows/make.yml
index 13cdc2e..ecdb38c 100644
--- a/.github/workflows/make.yml
+++ b/.github/workflows/make.yml
@@ -63,7 +63,7 @@ jobs:
       run: |
         if [[ $(git diff --stat) != '' ]]; then
           echo 'git dirty, updating timestamp'
-          date +%s > "timestamp.txt"
+          date +%s > "data/timestamp.txt"
         else
           echo 'no git changes, no timestamp update needed'
         fi
diff --git a/data/timestamp.txt b/data/timestamp.txt
new file mode 100644
index 0000000..a441874
--- /dev/null
+++ b/data/timestamp.txt
@@ -0,0 +1 @@
+1662872400