diff --git a/src/Text/Trifecta/Highlight.hs b/src/Text/Trifecta/Highlight.hs
--- a/src/Text/Trifecta/Highlight.hs
+++ b/src/Text/Trifecta/Highlight.hs
@@ -32,7 +32,7 @@
 import Text.Blaze.Html5 hiding (a,b,i)
 import qualified Text.Blaze.Html5 as Html5
 import Text.Blaze.Html5.Attributes hiding (title,id)
-import Text.Blaze.Internal
+import Text.Blaze.Internal (MarkupM(Empty, Leaf))
 import Text.Parser.Token.Highlight
 import Text.PrettyPrint.ANSI.Leijen hiding ((<>))
 import Text.Trifecta.Util.IntervalMap as IM
diff --git a/trifecta.cabal b/trifecta.cabal
--- a/trifecta.cabal
+++ b/trifecta.cabal
@@ -1,6 +1,6 @@
 name:          trifecta
 category:      Text, Parsing, Diagnostics, Pretty Printer, Logging
-version:       1.5.1
+version:       1.5.1.1
 license:       BSD3
 cabal-version: >= 1.10
 license-file:  LICENSE