diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,9 @@
+0.9.1.8:
+
+  Updated the upper bound on polyparse and directory. Fixed build
+  failure of RDFGraphTest with time >= 1.6. Updated the copyright
+  years in README.md.
+
 0.9.1.7:
 
   Turns out one of the constraints is needed by GHC 7.6.
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@
 
     (c) 2003, 2004 G. Klyne
     (c) 2009 Vasili I Galchin
-    (c) 2011, 2012, 2013, 2014 Doug Burke
+    (c) 2011, 2012, 2013, 2014, 2015, 2016, 2017 Doug Burke
 
 All rights reserved.
 
diff --git a/swish.cabal b/swish.cabal
--- a/swish.cabal
+++ b/swish.cabal
@@ -1,10 +1,10 @@
 Name:               swish
-Version:            0.9.1.7
+Version:            0.9.1.8
 Stability:          experimental
 License:            LGPL
 License-file:       LICENSE 
 Author:             Graham Klyne - GK@ninebynine.org
-Copyright:          (c) 2003, 2004 G. Klyne; 2009 Vasili I Galchin; 2011, 2012, 2013, 2014, 2015, 2016 Doug Burke; All rights reserved.
+Copyright:          (c) 2003, 2004 G. Klyne; 2009 Vasili I Galchin; 2011, 2012, 2013, 2014, 2015, 2016, 2017 Doug Burke; All rights reserved.
 Maintainer:         dburke@cfa.harvard.edu
 Category:           Semantic Web
 Synopsis:           A semantic web toolkit. 
@@ -96,7 +96,7 @@
       hashable (>= 1.1 && < 1.2) || (>= 1.2.0.6 && <1.3),
       mtl >= 2 && < 3,
       old-locale == 1.0.*, 
-      polyparse >= 1.6 && <= 1.11,
+      polyparse >= 1.6 && <= 1.12,
       semigroups >= 0.5 && < 0.19,
       text >= 0.11 && < 1.3,
       time >= 1.1 && < 1.7
@@ -116,7 +116,7 @@
    if impl(ghc < 7.6.0)
       Build-Depends:   directory >= 1.0 && < 1.2
    if impl(ghc >= 7.6.0)
-      Build-Depends:   directory >= 1.0 && < 1.3
+      Build-Depends:   directory >= 1.0 && < 1.4
 
    Hs-Source-Dirs: src/
    Other-Modules:  Swish.RDF.Formatter.Internal
diff --git a/tests/RDFGraphTest.hs b/tests/RDFGraphTest.hs
--- a/tests/RDFGraphTest.hs
+++ b/tests/RDFGraphTest.hs
@@ -6,7 +6,7 @@
 --------------------------------------------------------------------------------
 -- |
 --  Module      :  RDFGraphTest
---  Copyright   :  (c) 2003, Graham Klyne, 2009 Vasili I Galchin, 2011, 2012, 2013, 2014 Douglas Burke
+--  Copyright   :  (c) 2003, Graham Klyne, 2009 Vasili I Galchin, 2011, 2012, 2013, 2014, 2017 Douglas Burke
 --  License     :  GPL V2
 --
 --  Maintainer  :  Douglas Burke
@@ -519,7 +519,11 @@
   ]
   
 utc1, utc2 :: UTCTime
+#if MIN_VERSION_time(1,6,0)
+utc1 = fromJust (buildTime defaultTimeLocale [])
+#else
 utc1 = buildTime defaultTimeLocale []
+#endif
 utc2 =
   let dNum = fromGregorian 2011 2 28
       tDiff = (23.0 - 3.0) * 3600.0 + 4.0 * 60.0 + 2.304