diff --git a/.gitignore b/.gitignore
index e214849..2f524cc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,6 @@
+# builds of the site need not be synchronized
 /public/
-.obsidian/
\ No newline at end of file
+# hiddern folder generated by obsidian (if one uses that)
+.obsidian/
+# the Calibre trash folder shouldn't be synced either
+content/library/.caltrash
\ No newline at end of file