diff --git a/modules/Makefile b/modules/Makefile
index 214e914f1..da9bfe5a3 100644
--- a/modules/Makefile
+++ b/modules/Makefile
@@ -36,6 +36,9 @@ pva2pva_DEPEND_DIRS = pvAccess
 SUBMODULES += example
 example_DEPEND_DIRS = pva2pva pvaClient
 
+SUBMODULES += pcas
+pcas_DEPEND_DIRS = ca
+
 # Allow sites to add extra submodules
 -include Makefile.local