diff --git a/.github/workflows/workflow.yaml b/.github/workflows/workflow.yaml
index bda5fcd..2532acf 100644
--- a/.github/workflows/workflow.yaml
+++ b/.github/workflows/workflow.yaml
@@ -7,7 +7,7 @@ jobs:
         include:
           - { ghc: 9.0.2, hls: 1.7.0.0 }
           - { ghc: 9.2.4, hls: '' }
-          - { ghc: 9.4.1, hls: '' }
+          - { ghc: 9.4.2, hls: '' }
     name: Docker with GHC ${{ matrix.ghc }}
     runs-on: ubuntu-latest
     steps:
diff --git a/LICENSE b/LICENSE.txt
similarity index 100%
rename from LICENSE
rename to LICENSE.txt
diff --git a/README.markdown b/README.markdown
index 4165f87..1fc45d6 100644
--- a/README.markdown
+++ b/README.markdown
@@ -7,3 +7,4 @@ This Docker image provides a Haskell development environment with the following
 - [Cabal](https://www.haskell.org/cabal/)
 - [Stack](https://docs.haskellstack.org/en/stable/README/)
 - [HLS](https://haskell-language-server.readthedocs.io/en/latest/)
+  - Note that HLS is not available for all versions of GHC.