diff --git a/nix/libstore/sqlite.hh b/nix/libstore/sqlite.hh
index 326e4a4855..6cadba6849 100644
--- a/nix/libstore/sqlite.hh
+++ b/nix/libstore/sqlite.hh
@@ -2,6 +2,7 @@
 
 #include <functional>
 #include <string>
+#include <cstdint>
 
 #include "types.hh"