diff --git a/README.md b/README.md
index 4187148..8affe44 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ For details see the GitHub project page:
 
 http://robstewart57.github.io/rdf4h/
 
-Supports GHC versions from 8.0.2 (stackage lts-9) to 8.8.3 (stackage lts-16.0).
+Supports GHC versions from 9.2.5 (stackage lts-20.11).
 
 ### Development with Nix and direnv
 
diff --git a/rdf4h.cabal b/rdf4h.cabal
index 51851c2..f61183a 100644
--- a/rdf4h.cabal
+++ b/rdf4h.cabal
@@ -21,7 +21,7 @@ cabal-version:   >= 1.10
 build-type:      Simple
 category:        RDF
 stability:       stable
-tested-with:     GHC==8.0.2, GHC==8.2.2, GHC==8.4.3, GHC==8.6.5, GHC==8.8.3
+tested-with:     GHC==9.2.5
 extra-tmp-files: test
 extra-source-files: examples/ParseURLs.hs
                   , examples/ESWC.hs
@@ -97,7 +97,7 @@ library
                  , selective
                  , html-entities
                  , xeno
-                 , template-haskell
+                 , template-haskell >= 2.18.0
   other-modules:   Text.RDF.RDF4H.XmlParser.Xmlbf
                  , Text.RDF.RDF4H.XmlParser.Xeno
   if impl(ghc < 7.6)
diff --git a/stack.yaml b/stack.yaml
index cd37b64..21378ed 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,18 +1,7 @@
-resolver: lts-16.6
+resolver: lts-20.11
 packages:
 - '.'
 extra-deps:
-- algebraic-graphs-0.5
-- unordered-containers-0.2.10.0
-- selective-0.3
-- html-entities-1.1.4.3
-- mmorph-1.1.3
-- exceptions-0.10.4
-- semigroups-0.18.3
-- xeno-0.3.5.2
-- Cabal-3.2.0.0@sha256:d0d7a1f405f25d0000f5ddef684838bc264842304fd4e7f80ca92b997b710874,27320
-- parsec-3.1.14.0
-- text-1.2.4.0
 
 # for weeder tool
 #   https://github.com/ndmitchell/weeder