diff --git a/virtio-devices/src/seccomp_filters.rs b/virtio-devices/src/seccomp_filters.rs
index b8b558241..062cfd2b0 100644
--- a/virtio-devices/src/seccomp_filters.rs
+++ b/virtio-devices/src/seccomp_filters.rs
@@ -159,6 +159,7 @@ fn virtio_pmem_thread_rules() -> Result<Vec<SyscallRuleSet>, Error> {
 
 fn virtio_rng_thread_rules() -> Result<Vec<SyscallRuleSet>, Error> {
     Ok(vec![
+        allow_syscall(libc::SYS_brk),
         allow_syscall(libc::SYS_close),
         allow_syscall(libc::SYS_dup),
         allow_syscall(libc::SYS_epoll_create1),