diff --git a/hls-class-plugin.cabal b/hls-class-plugin.cabal
--- a/hls-class-plugin.cabal
+++ b/hls-class-plugin.cabal
@@ -1,6 +1,6 @@
 cabal-version:      2.4
 name:               hls-class-plugin
-version:            1.0.1.0
+version:            1.0.1.1
 synopsis:
   Class/instance management plugin for Haskell Language Server
 
@@ -29,28 +29,12 @@
     , containers
     , ghc
     , ghc-exactprint
-    , ghcide          >=1.2  && <1.5
+    , ghcide          >=1.2  && <1.6
     , hls-plugin-api  >=1.1  && <1.3
     , lens
     , lsp
     , text
     , transformers
-
-  if impl(ghc < 8.10.5)
-    build-depends:
-      ghc-api-compat ==8.6
-  elif impl(ghc == 8.10.5)
-    build-depends:
-      ghc-api-compat ==8.10.5
-  elif impl(ghc == 8.10.6)
-    build-depends:
-      ghc-api-compat ==8.10.6
-  elif impl(ghc == 8.10.7)
-    build-depends:
-      ghc-api-compat ==8.10.7
-  elif impl(ghc == 9.0.1)
-    build-depends:
-      ghc-api-compat ==9.0.1
 
   default-language:   Haskell2010
   default-extensions:
diff --git a/src/Ide/Plugin/Class.hs b/src/Ide/Plugin/Class.hs
--- a/src/Ide/Plugin/Class.hs
+++ b/src/Ide/Plugin/Class.hs
@@ -8,12 +8,10 @@
   ( descriptor
   ) where
 
-import           BooleanFormula
-import           Class
-import           ConLike
 import           Control.Applicative
 import           Control.Lens                            hiding (List, use)
 import           Control.Monad
+import           Control.Monad.IO.Class
 import           Control.Monad.Trans.Class
 import           Control.Monad.Trans.Maybe
 import           Data.Aeson
@@ -26,10 +24,9 @@
 import           Development.IDE.Core.PositionMapping    (fromCurrentRange,
                                                           toCurrentRange)
 import           Development.IDE.GHC.Compat
+import           Development.IDE.GHC.Compat.Util
 import           Development.IDE.Spans.AtPoint
 import qualified GHC.Generics                            as Generics
-import           GhcPlugins                              hiding (Var, getLoc,
-                                                          (<>))
 import           Ide.PluginUtils
 import           Ide.Types
 import           Language.Haskell.GHC.ExactPrint
@@ -38,8 +35,6 @@
 import           Language.LSP.Server
 import           Language.LSP.Types
 import qualified Language.LSP.Types.Lens                 as J
-import           TcEnv
-import           TcRnMonad
 
 descriptor :: PluginId -> PluginDescriptor IdeState
 descriptor plId = (defaultPluginDescriptor plId)