diff --git a/db/testutil.rs b/db/testutil.rs
index bce0231..9f42cb7 100644
--- a/db/testutil.rs
+++ b/db/testutil.rs
@@ -35,14 +35,14 @@ use fnv::FnvHashMap;
 use mylog;
 use rusqlite;
 use std::env;
-use std::sync::{self, Arc};
+use std::sync::Arc;
 use std::thread;
 use tempdir::TempDir;
 use time;
 use uuid::Uuid;
 use crate::writer;
 
-static INIT: sync::Once = sync::ONCE_INIT;
+static INIT: parking_lot::Once = parking_lot::Once::new();
 
 /// id of the camera created by `TestDb::new` below.
 pub const TEST_CAMERA_ID: i32 = 1;
diff --git a/src/stream.rs b/src/stream.rs
index e8a3440..a617bc0 100644
--- a/src/stream.rs
+++ b/src/stream.rs
@@ -36,9 +36,8 @@ use lazy_static::lazy_static;
 use log::{debug, info, warn};
 use std::ffi::CString;
 use std::result::Result;
-use std::sync;
 
-static START: sync::Once = sync::ONCE_INIT;
+static START: parking_lot::Once = parking_lot::Once::new();
 
 lazy_static! {
     pub static ref FFMPEG: Ffmpeg = Ffmpeg::new();