diff --git a/src/package.h b/src/package.h
index 4730ebe878..4244c23576 100644
--- a/src/package.h
+++ b/src/package.h
@@ -1,6 +1,7 @@
 #ifndef CYCLUS_SRC_PACKAGE_H_
 #define CYCLUS_SRC_PACKAGE_H_
 
+#include <limits>
 #include <string>
 #include <boost/shared_ptr.hpp>