diff --git a/FAQ.md b/FAQ.md
index bfcaba6..6aa1965 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -15,6 +15,7 @@ It needs CONFIG_BINFMT_MISC enabled in your kernel config.
 You need to copy qemu-*-static to your container first.      
 The path of qemu is the absolute path of qemu binary in the chroot container, for example, you have a qemu binary at `/path/to/container/qemu-amd64-static`, use `-a x86_64 -q /qemu-amd64-static` arguments to start the container.
 # About rootless container:
-WIP      
+Command need setgroups() may not work in rootless container, like su or apt.      
+You might need /etc/subuid and /etc/subgid configured in your system.      
 # About Seccomp:
 The seccomp rule of ruri is based on Docker's default seccomp profile. ruri does not provide the way to change it, but you can edit src/seccomp.c and replace setup_seccomp() with your own config.      
\ No newline at end of file
diff --git a/src/include/version.h b/src/include/version.h
index 7a1c1d2..7ce2576 100644
--- a/src/include/version.h
+++ b/src/include/version.h
@@ -29,4 +29,4 @@
  *
  */
 // Version info.
-#define RURI_VERSION "3.1"
+#define RURI_VERSION "3.2"