diff --git a/mk/config.mk.in b/mk/config.mk.in
index 713b42ce4c5771b768d878b265c4b5224ca11d41..a2f6a654b09a6ecbc468adcb027b6e08e0738713 100644
--- a/mk/config.mk.in
+++ b/mk/config.mk.in
@@ -110,11 +110,11 @@ exeext=@exeext@
 #		* ghc next
 #		then it's up to you
 
-ProjectsToBuild   = glafp-utils ghc
+ProjectsToBuild   = glafp-utils ghc hslibs
 #
 # Make a distinction between building and installing
 #
-ProjectsToInstall = glafp-utils ghc
+ProjectsToInstall = glafp-utils ghc hslibs
 
 #
 # Should the various project tests directories be built?