diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,8 @@
+0.10.0.6:
+
+  Support recent time, network-uri, and semigroups releases.
+  Bumped the minimum base version to 4.8 (GHC 7.10).
+
 0.10.0.5:
 
   Support for base from ghc 9.0.
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, 2015, 2016, 2017, 2018, 2019,
-	    2020 Doug Burke
+	    2020, 2021 Doug Burke
 
 All rights reserved.
 
@@ -79,6 +79,8 @@
 
     % cd swish
     % stack install
+    % STACK_YAML=stack-9.0.yaml stack install
+    % STACK_YAML=stack-8.10.yaml stack install
     % STACK_YAML=stack-8.8.yaml stack install
     % STACK_YAML=stack-8.6.yaml stack install
     % STACK_YAML=stack-8.4.yaml stack install
@@ -94,7 +96,3 @@
     % nix-shell
 	...
 	nix-shell% cabal test
-
-At the time of writing this uses GHC 8.8.2, but you can switch compiler
-
-    % nix-shell --argstr compiler ghc865
diff --git a/default.nix b/default.nix
--- a/default.nix
+++ b/default.nix
@@ -1,43 +1,1 @@
-# { compiler ? "ghc8102" }:
-
-# Looks like release-20.03 doesn't have haskell-language-server so stick
-# with nixpkgs-unstable
-{ nixpkgs ? import <nixpkgs> {}, compiler ? "ghc8102" }:
-
-let
-  # sources = import ../nix/sources.nix;
-  # pkgs = import sources.nixpkgs {};
-
-  inherit (nixpkgs) pkgs;
-
-  gitignore = pkgs.nix-gitignore.gitignoreSourcePure [ ./.gitignore ];
-
-  myHaskellPackages = pkgs.haskell.packages.${compiler}.override {
-    overrides = hself: hsuper: {
-      "swish" =
-        hself.callCabal2nix "swish" (gitignore ./.) {};
-    };
-  };
-
-  shell = myHaskellPackages.shellFor {
-    packages = p: [
-      p."swish"
-    ];
-    buildInputs = [
-      pkgs.haskellPackages.cabal-install
-      pkgs.haskellPackages.haskell-language-server
-      pkgs.haskellPackages.hlint
-      pkgs.niv
-    ];
-    withHoogle = true;
-  };
-
-  exe = pkgs.haskell.lib.justStaticExecutables (myHaskellPackages."swish");
-
-in
-{
-  inherit shell;
-  inherit exe;
-  inherit myHaskellPackages;
-  "swish" = myHaskellPackages."swish";
-}
+(import ./release.nix {}).exe
diff --git a/shell.nix b/shell.nix
--- a/shell.nix
+++ b/shell.nix
@@ -1,2 +1,1 @@
-{ nixpkgs ? import <nixpkgs> {}, compiler ? "ghc8102" }:
-(import ./default.nix { inherit nixpkgs compiler; }).shell
+(import ./release.nix {}).shell
diff --git a/src/Swish/RDF/Parser/NTriples.hs b/src/Swish/RDF/Parser/NTriples.hs
--- a/src/Swish/RDF/Parser/NTriples.hs
+++ b/src/Swish/RDF/Parser/NTriples.hs
@@ -6,7 +6,7 @@
 
 -- |
 --  Module      :  NTriples
---  Copyright   :  (c) 2011, 2012, 2013, 2018 Douglas Burke
+--  Copyright   :  (c) 2011, 2012, 2013, 2018, 2021 Douglas Burke
 --  License     :  GPL V2
 --
 --  Maintainer  :  Douglas Burke
@@ -192,7 +192,7 @@
 -}
 
 isWS :: Char -> Bool
-isWS = (`elem` " \t")
+isWS = (`elem` (" \t" :: String))
 
 {-
 ws :: NTParser ()
diff --git a/stack.yaml b/stack.yaml
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,4 @@
 flags: {}
 packages:
 - '.'
-resolver: lts-16.31
+resolver: lts-18.13
diff --git a/swish.cabal b/swish.cabal
--- a/swish.cabal
+++ b/swish.cabal
@@ -1,10 +1,10 @@
 Name:               swish
-Version:            0.10.0.5
+Version:            0.10.0.6
 Stability:          experimental
 License:            LGPL-2.1
 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, 2017, 2018, 2019, 2020 Doug Burke; All rights reserved.
+Copyright:          (c) 2003, 2004 G. Klyne; 2009 Vasili I Galchin; 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Doug Burke; All rights reserved.
 Maintainer:         dburke@cfa.harvard.edu
 Category:           Semantic Web
 Synopsis:           A semantic web toolkit. 
@@ -94,7 +94,7 @@
 Library
    Default-Language:    Haskell2010
    Build-Depends:
-      base >= 4.5 && < 4.16,
+      base >= 4.8 && < 4.16,
       containers >= 0.5 && < 0.7,
       directory >= 1.0 && < 1.4,
       filepath >= 1.1 && < 1.5,
@@ -108,10 +108,10 @@
       text >= 0.11 && < 1.3,
       -- I don't think 1.9.0 will work and it was quickly replaced
       -- so do not support it           
-      time (>= 1.1 && < 1.9) || (>= 1.9.1 && < 1.10)
+      time (>= 1.1 && < 1.9) || (>= 1.9.1 && < 1.12)
 
    if flag(network-uri)
-     build-depends: network-uri == 2.6.*
+     build-depends: network-uri >= 2.6 && < 2.8
    else
      build-depends: network-uri < 2.6
                     , network >= 2.4 && < 2.6
@@ -119,7 +119,7 @@
    if impl(ghc < 8.0.0)
      ghc-options:
         -Wall -fno-warn-orphans
-     build-depends: semigroups >= 0.16 && < 0.19
+     build-depends: semigroups >= 0.16 && < 0.20
    else
      if impl(ghc < 8.8.0)
        ghc-options: