diff --git a/src/branch.hpp b/src/branch.hpp
index d72c5d7a..b6e6eb4d 100644
--- a/src/branch.hpp
+++ b/src/branch.hpp
@@ -21,6 +21,7 @@
 #include "nonstd/optional.hpp"
 #include "strvec.hpp"
 #include "tofrom_string.hpp"
+#include "ghc/filesystem.hpp"
 
 #include <cstdint>
 #include <string>