diff --git a/configure b/configure
index ad4bac5..be53cb4 100755
--- a/configure
+++ b/configure
@@ -59,6 +59,7 @@ config_subdirs \
event \
json \
markdown \
+ smtp \
socket \
http \
httpd \
diff --git a/update_sources b/update_sources
index 767c6b8..a38e9a2 100755
--- a/update_sources
+++ b/update_sources
@@ -92,6 +92,7 @@ update_sources_sh
( cd event && ./update_sources; )
( cd json && ./update_sources; )
( cd markdown && ./update_sources; )
+( cd smtp && ./update_sources; )
( cd socket && ./update_sources; )
( cd http && ./update_sources; )
( cd httpd && ./update_sources; )