diff --git a/libaegisub/include/libaegisub/audio/provider.h b/libaegisub/include/libaegisub/audio/provider.h
index debb560ce..70460a723 100644
--- a/libaegisub/include/libaegisub/audio/provider.h
+++ b/libaegisub/include/libaegisub/audio/provider.h
@@ -20,6 +20,7 @@
 #include <libaegisub/fs_fwd.h>
 
 #include <atomic>
+#include <memory>
 #include <vector>
 
 namespace agi {