diff --git a/hls-fourmolu-plugin.cabal b/hls-fourmolu-plugin.cabal
--- a/hls-fourmolu-plugin.cabal
+++ b/hls-fourmolu-plugin.cabal
@@ -1,6 +1,6 @@
 cabal-version:      2.4
 name:               hls-fourmolu-plugin
-version:            1.1.0.0
+version:            1.1.1.0
 synopsis:           Integration with the Fourmolu code formatter
 description:
   Please see the README on GitHub at <https://github.com/haskell/haskell-language-server#readme>
@@ -23,10 +23,6 @@
   location: git://github.com/haskell/haskell-language-server.git
 
 library
-  if impl(ghc >= 9.3)
-    buildable: False
-  else
-    buildable: True
   exposed-modules:
       Ide.Plugin.Fourmolu
     , Ide.Plugin.Fourmolu.Shim
@@ -35,23 +31,22 @@
   build-depends:
     , base            >=4.12 && <5
     , filepath
-    , fourmolu        ^>=0.3 || ^>=0.4 || ^>= 0.6 || ^>= 0.7 || ^>= 0.8
+    , fourmolu        ^>=0.3 || ^>=0.4 || ^>= 0.6 || ^>= 0.7 || ^>= 0.8 || ^>= 0.9 || ^>= 0.10
     , ghc
     , ghc-boot-th
-    , ghcide          ^>=1.8
-    , hls-plugin-api  ^>=1.5
+    , ghcide          ^>=1.8 || ^>= 1.9
+    , hls-plugin-api  ^>=1.5 || ^>= 1.6
     , lens
     , lsp
     , process-extras  >= 0.7.1
     , text
 
+  -- fourmolu 0.9.0 fails to build on Windows CI for reasons unknown
+  if impl(ghc >= 9.2) && os(windows) && impl(ghc < 9.4)
+     build-depends: fourmolu > 0.9.0.0 || < 0.9.0.0
   default-language: Haskell2010
 
 test-suite tests
-  if impl(ghc >= 9.3)
-    buildable: False
-  else
-    buildable: True
   type:             exitcode-stdio-1.0
   default-language: Haskell2010
   hs-source-dirs:   test
@@ -66,5 +61,5 @@
     , filepath
     , hls-fourmolu-plugin
     , hls-plugin-api
-    , hls-test-utils       ^>=1.4
+    , hls-test-utils       ^>=1.5
     , lsp-test
diff --git a/src/Ide/Plugin/Fourmolu.hs b/src/Ide/Plugin/Fourmolu.hs
--- a/src/Ide/Plugin/Fourmolu.hs
+++ b/src/Ide/Plugin/Fourmolu.hs
@@ -9,6 +9,7 @@
 module Ide.Plugin.Fourmolu (
     descriptor,
     provider,
+    LogEvent,
 ) where
 
 import           Control.Exception               (IOException, try)
@@ -26,8 +27,7 @@
 import           GHC.LanguageExtensions.Type     (Extension (Cpp))
 import           Ide.Plugin.Fourmolu.Shim
 import           Ide.Plugin.Properties
-import           Ide.PluginUtils                 (makeDiffTextEdit,
-                                                  usePropertyLsp)
+import           Ide.PluginUtils                 (makeDiffTextEdit)
 import           Ide.Types
 import           Language.LSP.Server             hiding (defaultConfig)
 import           Language.LSP.Types              hiding (line)
@@ -43,6 +43,7 @@
 descriptor recorder plId =
     (defaultPluginDescriptor plId)
         { pluginHandlers = mkFormattingHandlers $ provider recorder plId
+        , pluginConfigDescriptor = defaultConfigDescriptor{configCustomConfig = mkCustomConfig properties}
         }
 
 properties :: Properties '[ 'PropertyKey "external" 'TBoolean]
@@ -58,7 +59,7 @@
     fileOpts <-
         maybe [] (convertDynFlags . hsc_dflags . hscEnv)
             <$> liftIO (runAction "Fourmolu" ideState $ use GhcSession fp)
-    useCLI <- usePropertyLsp #external plId properties
+    useCLI <- liftIO $ runAction "Fourmolu" ideState $ usePropertyAction #external plId properties
     if useCLI
         then liftIO
             . fmap (join . first (mkError . show))
diff --git a/test/Main.hs b/test/Main.hs
--- a/test/Main.hs
+++ b/test/Main.hs
@@ -15,8 +15,8 @@
 main :: IO ()
 main = defaultTestRunner tests
 
-fourmoluPlugin :: PluginDescriptor IdeState
-fourmoluPlugin = Fourmolu.descriptor mempty "fourmolu"
+fourmoluPlugin :: PluginTestDescriptor Fourmolu.LogEvent
+fourmoluPlugin = mkPluginTestDescriptor Fourmolu.descriptor "fourmolu"
 
 tests :: TestTree
 tests =