diff --git a/hls-plugin-api.cabal b/hls-plugin-api.cabal
--- a/hls-plugin-api.cabal
+++ b/hls-plugin-api.cabal
@@ -1,6 +1,6 @@
 cabal-version: 2.4
 name:          hls-plugin-api
-version:       1.2.0.0
+version:       1.2.0.1
 synopsis:      Haskell Language Server API for plugin communication
 description:
   Please see the README on GitHub at <https://github.com/haskell/haskell-language-server#readme>
diff --git a/src/Ide/Plugin/ConfigUtils.hs b/src/Ide/Plugin/ConfigUtils.hs
--- a/src/Ide/Plugin/ConfigUtils.hs
+++ b/src/Ide/Plugin/ConfigUtils.hs
@@ -86,13 +86,14 @@
         -- This function captures ide methods registered by the plugin, and then converts it to kv pairs
         handlersToGenericDefaultConfig :: DSum.DSum IdeMethod f -> [A.Pair]
         handlersToGenericDefaultConfig (IdeMethod m DSum.:=> _) = case m of
-          STextDocumentCodeAction     -> ["codeActionsOn" A..= True]
-          STextDocumentCodeLens       -> ["codeLensOn" A..= True]
-          STextDocumentRename         -> ["renameOn" A..= True]
-          STextDocumentHover          -> ["hoverOn" A..= True]
-          STextDocumentDocumentSymbol -> ["symbolsOn" A..= True]
-          STextDocumentCompletion     -> ["completionOn" A..= True]
-          _                           -> []
+          STextDocumentCodeAction           -> ["codeActionsOn" A..= True]
+          STextDocumentCodeLens             -> ["codeLensOn" A..= True]
+          STextDocumentRename               -> ["renameOn" A..= True]
+          STextDocumentHover                -> ["hoverOn" A..= True]
+          STextDocumentDocumentSymbol       -> ["symbolsOn" A..= True]
+          STextDocumentCompletion           -> ["completionOn" A..= True]
+          STextDocumentPrepareCallHierarchy -> ["callHierarchyOn" A..= True]
+          _                                 -> []
 
 -- | Generates json schema used in haskell vscode extension
 -- Similar to 'pluginsToDefaultConfig' but simpler, since schema has a flatten structure
@@ -121,6 +122,7 @@
           STextDocumentHover -> [withIdPrefix "hoverOn" A..= schemaEntry "hover"]
           STextDocumentDocumentSymbol -> [withIdPrefix "symbolsOn" A..= schemaEntry "symbols"]
           STextDocumentCompletion -> [withIdPrefix "completionOn" A..= schemaEntry "completions"]
+          STextDocumentPrepareCallHierarchy -> [withIdPrefix "callHierarchyOn" A..= schemaEntry "call hierarchy"]
           _ -> []
         schemaEntry desc =
           A.object
diff --git a/src/Ide/Types.hs b/src/Ide/Types.hs
--- a/src/Ide/Types.hs
+++ b/src/Ide/Types.hs
@@ -192,7 +192,16 @@
       wasRequested (InR ca)
         | Nothing <- _only context = True
         | Just (List allowed) <- _only context
-        , Just caKind <- ca ^. kind = caKind `elem` allowed
+        -- See https://github.com/microsoft/language-server-protocol/issues/970
+        -- This is somewhat vague, but due to the hierarchical nature of action kinds, we
+        -- should check whether the requested kind is a *prefix* of the action kind.
+        -- That means, for example, we will return actions with kinds `quickfix.import` and
+        -- `quickfix.somethingElse` if the requested kind is `quickfix`.
+        -- TODO: add helpers in `lsp` for handling code action hierarchies
+        -- For now we abuse the fact that the JSON representation gives us the hierarchical string.
+        , Just caKind <- ca ^. kind
+        , String caKindStr <- toJSON caKind =
+                any (\k -> k `T.isPrefixOf` caKindStr) [kstr | k <- allowed, let String kstr = toJSON k ]
         | otherwise = False
 
 instance PluginMethod TextDocumentCodeLens where