block-cache/io_engine.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/block-cache/io_engine.h b/block-cache/io_engine.h
index fd902c1..1c1a0e8 100644
--- a/block-cache/io_engine.h
+++ b/block-cache/io_engine.h
@@ -7,6 +7,7 @@
 #include <ctype.h>
 #include <set>
 #include <string>
+#include <vector>
 #include <libaio.h>
 
 //----------------------------------------------------------------