diff --git a/.gitignore b/.gitignore
index 88033e23..f411b223 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,14 +8,6 @@
 os/src/link_app.S
 os/src/linker.ld
 os/last-*
-os/Cargo.lock
 os/.gdb_history
-user/target/*
-user/.idea/*
-user/Cargo.lock
-easy-fs/Cargo.lock
-easy-fs/target/*
-easy-fs-fuse/Cargo.lock
-easy-fs-fuse/target/*
 tools/
 pushall.sh