diff --git a/src/libutil/config.hh b/src/libutil/config.hh
index 42fc856e0..18fa9dea8 100644
--- a/src/libutil/config.hh
+++ b/src/libutil/config.hh
@@ -4,7 +4,7 @@
 
 #include "types.hh"
 
-#include <nlohmann/json_fwd.hpp>
+#include <nlohmann/json.hpp>
 
 #pragma once