diff --git a/LIO/DCLabel.hs b/LIO/DCLabel.hs
--- a/LIO/DCLabel.hs
+++ b/LIO/DCLabel.hs
@@ -16,7 +16,7 @@
 
 module LIO.DCLabel (
   -- ** Principals
-    Principal, principal
+    Principal, principalName, principal
   -- ** Clauses
   , Clause, clause
   -- ** Components
diff --git a/lio.cabal b/lio.cabal
--- a/lio.cabal
+++ b/lio.cabal
@@ -1,5 +1,5 @@
 Name:           lio
-Version:        0.9.1.0
+Version:        0.9.1.1
 Cabal-Version:  >= 1.8
 Build-type:     Simple
 License:        GPL