diff --git a/src/format/context/common.rs b/src/format/context/common.rs
index d1abba3b..30ea5b11 100644
--- a/src/format/context/common.rs
+++ b/src/format/context/common.rs
@@ -14,6 +14,7 @@ pub struct Context {
 }
 
 unsafe impl Send for Context {}
+unsafe impl Sync for Context {}
 
 impl Context {
     pub unsafe fn wrap(ptr: *mut AVFormatContext, mode: destructor::Mode) -> Self {