diff --git a/library/qucs.blacklist b/library/qucs.blacklist
index 90a70a04..21323617 100644
--- a/library/qucs.blacklist
+++ b/library/qucs.blacklist
@@ -1,5 +1,8 @@
 SpiceOpamp.lib
 Cores.lib
+Digital_CD4000.lib
+Digital_HC.lib
+Digital_LV.lib
 Transformers.lib
 Xanalogue.lib
 BF998.lib
diff --git a/library/xyce.blacklist b/library/xyce.blacklist
index d91ec5bd..e6a40756 100644
--- a/library/xyce.blacklist
+++ b/library/xyce.blacklist
@@ -1,4 +1,6 @@
 Substrates.lib
 Xanalogue.lib
 PWM_Controller.lib
-
+Digital_CD4000.lib
+Digital_HC.lib
+Digital_LV.lib