diff --git a/lib/path.cc b/lib/path.cc
index 324cae6..a4f470a 100644
--- a/lib/path.cc
+++ b/lib/path.cc
@@ -15,6 +15,7 @@
 
 #include "path.h"
 
+#include <algorithm>
 #include <cassert>
 #include <iomanip>