diff --git a/book/.gitignore b/book/.gitignore
index ee70b5e5f5..79339e2bf0 100644
--- a/book/.gitignore
+++ b/book/.gitignore
@@ -1,7 +1,2 @@
-**/*.rs.bk
-.#*
-.gdb_history
-/*/book
-/target
-Cargo.lock
-*.hex
+# Make sure that mdbook output in repo-root/book/<language>/book is ignored
+*/book