diff --git a/SConstruct b/SConstruct
index cbdf9de..5a7ad9b 100644
--- a/SConstruct
+++ b/SConstruct
@@ -263,6 +263,7 @@
                    graph_utils.cc
                    http_common.cc
                    http_fetcher.cc
+                   install_plan.cc
                    libcurl_http_fetcher.cc
                    marshal.glibmarshal.c
                    metadata.cc