diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,6 +1,11 @@
+0.10.11.0:
+
+  Allow building with base version 4.22 (GHC 9.14), containers
+  0.8, and time 1.15.
+
 0.10.10.0:
 
-  Allow building with base version 4.22 (GHC 9.12).
+  Allow building with base version 4.21 (GHC 9.12).
 
   The -v flag for Swish now includes the GHC version and
   platform information.
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@
 
     (c) 2003, 2004 G. Klyne
     (c) 2009 Vasili I Galchin
-    (c) 2011 - 2024 Doug Burke
+    (c) 2011 - 2024, 2026 Doug Burke
 
 All rights reserved.
 
diff --git a/swish.cabal b/swish.cabal
--- a/swish.cabal
+++ b/swish.cabal
@@ -1,12 +1,12 @@
 Cabal-Version:      2.4
 
 Name:               swish
-Version:            0.10.10.0
+Version:            0.10.11.0
 Stability:          experimental
 License:            LGPL-2.1-or-later
 License-file:       LICENSE 
 Author:             Graham Klyne - GK@ninebynine.org
-Copyright:          (c) 2003, 2004 G. Klyne; 2009 Vasili I Galchin; 2011 - 2024 Doug Burke; All rights reserved.
+Copyright:          (c) 2003, 2004 G. Klyne; 2009 Vasili I Galchin; 2011 - 2024, 2026 Doug Burke; All rights reserved.
 Maintainer:         dburke.gw@gmail.com
 Category:           Semantic Web
 Synopsis:           A semantic web toolkit. 
@@ -97,8 +97,8 @@
 Library
    Default-Language:    Haskell2010
    Build-Depends:
-      base >= 4.8 && < 4.22,
-      containers >= 0.5 && < 0.8,
+      base >= 4.8 && < 4.23,
+      containers >= 0.5 && < 0.9,
       directory >= 1.0 && < 1.4,
       filepath >= 1.1 && < 1.6,
       -- Early versions of hashable 1.2 are problematic
@@ -109,7 +109,7 @@
       text >= 0.11 && < 2.2,
       -- I don't think 1.9.0 will work and it was quickly replaced
       -- so do not support it           
-      time (>= 1.5 && < 1.9) || (>= 1.9.1 && < 1.15)
+      time (>= 1.5 && < 1.9) || (>= 1.9.1 && < 1.16)
 
    if flag(network-uri)
      build-depends: network-uri >= 2.6 && < 2.8
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, 2017, 2021 Douglas Burke
+--  Copyright   :  (c) 2003, Graham Klyne, 2009 Vasili I Galchin, 2011, 2012, 2013, 2014, 2017, 2021, 2026 Douglas Burke
 --  License     :  GPL V2
 --
 --  Maintainer  :  Douglas Burke
@@ -74,8 +74,11 @@
 
 import Network.URI (URI, parseURI)
 
-#if MIN_VERSION_time(1,9,0)
+#if MIN_VERSION_time(1,15,0)
 import Data.Time (UTCTime(..), Day, fromGregorian, defaultTimeLocale)
+import Data.Time.Format (parseTimeM)
+#elif MIN_VERSION_time(1,9,0)
+import Data.Time (UTCTime(..), Day, fromGregorian, defaultTimeLocale)
 import Data.Time.Format.Internal (buildTime)
 #elif MIN_VERSION_time(1,5,0)
 import Data.Time (UTCTime(..), Day, fromGregorian, buildTime, defaultTimeLocale)
@@ -522,7 +525,9 @@
   ]
   
 utc1, utc2 :: UTCTime
-#if MIN_VERSION_time(1,6,0)
+#if MIN_VERSION_time(1,15,0)
+utc1 = fromJust (parseTimeM False defaultTimeLocale "" "")
+#elif MIN_VERSION_time(1,6,0)
 utc1 = fromJust (buildTime defaultTimeLocale [])
 #else
 utc1 = buildTime defaultTimeLocale []