diff --git a/Makefile.am b/Makefile.am
index 472dd06..aebc8a2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -7,7 +7,9 @@
                 mainapp.cpp
 
 phosphor_user_manager_LDFLAGS = $(SDBUSPLUS_LIBS) \
-                                $(PHOSPHOR_DBUS_INTERFACES_LIBS)
+                                $(PHOSPHOR_DBUS_INTERFACES_LIBS) \
+                                -lcrypt \
+                                -lstdc++fs
 
 phosphor_user_manager_CXXFLAGS = $(SYSTEMD_CFLAGS) \
                                  $(PHOSPHOR_DBUS_INTERFACES_CFLAGS)