diff --git a/src/branch2.hpp b/src/branch2.hpp
index 3cd2b9e1..91ef8e93 100644
--- a/src/branch2.hpp
+++ b/src/branch2.hpp
@@ -1,5 +1,7 @@
 #include "ghc/filesystem.hpp"
 
+#include "toml.hpp"
+
 #include <stdint.h>
 
 class Branch2