diff --git a/c8.conf b/c8.conf
index b8d0d91..6d85024 100644
--- a/c8.conf
+++ b/c8.conf
@@ -1,3 +1,5 @@
+from multilib import *
+
 # PRODUCT INFO 
 release_name = "CentOS Linux" 
 release_short = "CentOS"
diff --git a/multilib.conf b/multilib.conf
new file mode 100644
index 0000000..092fddb
--- /dev/null
+++ b/multilib.conf
@@ -0,0 +1,16 @@
+# format: {arch|*: [packages]}
+multilib_blacklist = {
+    "*": [
+        "libvirt*",
+        "java-*",
+        "totem",
+    ],
+}
+
+# format: {arch|*: [packages]}
+multilib_whitelist = {
+    "*": [
+         "valgrind",
+         "papi",
+    ],
+}