diff --git a/semantic-diff.cabal b/semantic-diff.cabal
index 8847943f3..5d249deb5 100644
--- a/semantic-diff.cabal
+++ b/semantic-diff.cabal
@@ -54,7 +54,6 @@ library
                      , Language.Go.Syntax
                      , Language.JSON.Grammar
                      , Language.JSON.Syntax
-                     , Language.Ruby
                      , Language.Ruby.Grammar
                      , Language.Ruby.Syntax
                      , Language.TypeScript.Grammar
diff --git a/src/Language/Ruby.hs b/src/Language/Ruby.hs
deleted file mode 100644
index d76db7809..000000000
--- a/src/Language/Ruby.hs
+++ /dev/null
@@ -1,178 +0,0 @@
-{-# LANGUAGE DataKinds #-}
-module Language.Ruby where
-
-import Control.Comonad
-import Control.Comonad.Cofree
-import Data.Foldable (toList)
-import Data.List (partition)
-import Data.Semigroup
-import Data.Source
-import Data.Text (Text)
-import Info
-import Language
-import qualified Syntax as S
-import Term hiding ((:<))
-
-termAssignment
-  :: Source -- ^ The source of the term.
-  -> Category -- ^ The category for the term.
-  -> [ SyntaxTerm DefaultFields ] -- ^ The child nodes of the term.
-  -> Maybe (S.Syntax (SyntaxTerm DefaultFields)) -- ^ The resulting term, in Maybe.
-termAssignment _ category children
-  = case (category, children) of
-    (ArgumentPair, [ k, v ] ) -> Just $ S.Pair k v
-    (KeywordParameter, [ k, v ] ) -> Just $ S.Pair k v
-    -- NB: ("keyword_parameter", k) is a required keyword parameter, e.g.:
-    --    def foo(name:); end
-    -- Let it fall through to generate an Indexed syntax.
-    (OptionalParameter, [ k, v ] ) -> Just $ S.Pair k v
-    (AnonymousFunction, first : rest)
-      | null rest -> Just $ S.AnonymousFunction [] [first]
-      | otherwise -> Just $ S.AnonymousFunction (toList (unwrap first)) rest
-    (ArrayLiteral, _ ) -> Just $ S.Array Nothing children
-    (Assignment, [ identifier, value ]) -> Just $ S.Assignment identifier value
-    (Begin, _ ) -> Just $ case partition (\x -> Info.category (extract x) == Rescue) children of
-      (rescues, rest) -> case partition (\x -> Info.category (extract x) == Ensure || Info.category (extract x) == Else) rest of
-        (ensureElse, body) -> case ensureElse of
-          [ elseBlock, ensure ]
-            | Else <- Info.category (extract elseBlock)
-            , Ensure <- Info.category (extract ensure) -> S.Try body rescues (Just elseBlock) (Just ensure)
-          [ ensure, elseBlock ]
-            | Ensure <- Info.category (extract ensure)
-            , Else <- Info.category (extract elseBlock) -> S.Try body rescues (Just elseBlock) (Just ensure)
-          [ elseBlock ] | Else <- Info.category (extract elseBlock) -> S.Try body rescues (Just elseBlock) Nothing
-          [ ensure ] | Ensure <- Info.category (extract ensure) -> S.Try body rescues Nothing (Just ensure)
-          _ -> S.Try body rescues Nothing Nothing
-    (Class, constant : superclass : body)
-      | Superclass <- Info.category (extract superclass)
-      -> Just $ S.Class constant [superclass] body
-    (Class, constant : rest) -> Just $ S.Class constant [] rest
-    (SingletonClass, identifier : rest) -> Just $ S.Class identifier [] rest
-    (Case, _) -> Just $ uncurry S.Switch (break ((== When) . Info.category . extract) children)
-    (When, expr : body) -> Just $ S.Case expr body
-    (Ternary, condition : cases) -> Just $ S.Ternary condition cases
-    (MethodCall, fn : args)
-      | MemberAccess <- Info.category (extract fn)
-      , [target, method] <- toList (unwrap fn)
-      -> Just $ S.MethodCall target method [] (toList . unwrap =<< args)
-      | otherwise
-      -> Just $ S.FunctionCall fn [] (toList . unwrap =<< args)
-    (Object, _ ) -> Just . S.Object Nothing $ foldMap toTuple children
-    (Modifier If, [ lhs, condition ]) -> Just $ S.If condition [lhs]
-    (Modifier Unless, [lhs, rhs]) -> Just $ S.If (setCategory (extract rhs) Negate :< S.Negate rhs) [lhs]
-    (Unless, expr : rest) -> Just $ S.If ((setCategory (extract expr) Negate) :< S.Negate expr) rest
-    (Modifier Until, [ lhs, rhs ]) -> Just $ S.While (setCategory (extract rhs) Negate :< S.Negate rhs) [lhs]
-    (Until, expr : rest) -> Just $ S.While (setCategory (extract expr) Negate :< S.Negate expr) rest
-    (Elsif, condition : body ) -> Just $ S.If condition body
-    (SubscriptAccess, [ base, element ]) -> Just $ S.SubscriptAccess base element
-    (For, lhs : expr : rest ) -> Just $ S.For [lhs, expr] rest
-    (OperatorAssignment, [ identifier, value ]) -> Just $ S.OperatorAssignment identifier value
-    (MemberAccess, [ base, property ]) -> Just $ S.MemberAccess base property
-    (SingletonMethod, expr : methodName : rest)
-      | params : body <- rest
-      , Params <- Info.category (extract params)
-      -> Just $ S.Method [] methodName (Just expr) [params] body
-      | Identifier <- Info.category (extract methodName)
-      -> Just $ S.Method [] methodName (Just expr) [] rest
-    (Method, identifier : rest)
-      | params : body <- rest
-      , Params <- Info.category (extract params)
-      -> Just $ S.Method [] identifier Nothing [params] body
-      | otherwise
-      -> Just $ S.Method [] identifier Nothing [] rest
-    (Module, constant : body ) -> Just $ S.Module constant body
-    (Modifier Rescue, [lhs, rhs] ) -> Just $ S.Rescue [lhs] [rhs]
-    (Rescue, exceptions : exceptionVar : rest)
-      | RescueArgs <- Info.category (extract exceptions)
-      , RescuedException <- Info.category (extract exceptionVar)
-      -> Just $ S.Rescue (toList (unwrap exceptions) <> [exceptionVar]) rest
-    (Rescue, exceptionVar : rest)
-      | RescuedException <- Info.category (extract exceptionVar)
-      -> Just $ S.Rescue [exceptionVar] rest
-    (Rescue, exceptions : body)
-      | RescueArgs <- Info.category (extract exceptions)
-      -> Just $ S.Rescue (toList (unwrap exceptions)) body
-    (Rescue, body) -> Just $ S.Rescue [] body
-    (Modifier While, [ lhs, condition ]) -> Just $ S.While condition [lhs]
-    _ | category `elem` [ BeginBlock, EndBlock ] -> Just $ S.BlockStatement children
-    _  -> Nothing
-
-categoryForRubyName :: Text -> Category
-categoryForRubyName name = case name of
-  "argument_list_with_parens" -> Args
-  "argument_list" -> Args
-  "argument_pair" -> ArgumentPair
-  "array" -> ArrayLiteral
-  "assignment" -> Assignment
-  "begin_block" -> BeginBlock
-  "begin" -> Begin
-  "binary" -> Binary
-  "block" -> ExpressionStatements
-  "block_parameter" -> BlockParameter
-  "block_parameters" -> Params
-  "boolean" -> Boolean
-  "call" -> MemberAccess
-  "case" -> Case
-  "class"  -> Class
-  "comment" -> Comment
-  "conditional" -> Ternary
-  "constant" -> Constant
-  "element_reference" -> SubscriptAccess
-  "else" -> Else
-  "elsif" -> Elsif
-  "empty_statement" -> Empty
-  "end_block" -> EndBlock
-  "ensure" -> Ensure
-  "exception_variable" -> RescuedException
-  "exceptions" -> RescueArgs
-  "false" -> Boolean
-  "float" -> NumberLiteral
-  "for" -> For
-  "hash_splat_parameter" -> HashSplatParameter
-  "hash" -> Object
-  "identifier" -> Identifier
-  "if_modifier" -> Modifier If
-  "if" -> If
-  "instance_variable" -> Identifier
-  "integer" -> IntegerLiteral
-  "interpolation" -> Interpolation
-  "keyword_parameter" -> KeywordParameter
-  "lambda_parameters" -> Params
-  "lambda" -> AnonymousFunction
-  "left_assignment_list" -> Args
-  "method_call" -> MethodCall
-  "method_parameters" -> Params
-  "method" -> Method
-  "module"  -> Module
-  "nil" -> Identifier
-  "operator_assignment" -> OperatorAssignment
-  "optional_parameter" -> OptionalParameter
-  "pair" -> Pair
-  "pattern" -> Args
-  "program" -> Program
-  "range" -> RangeExpression
-  "regex" -> Regex
-  "rescue_modifier" -> Modifier Rescue
-  "rescue" -> Rescue
-  "rest_assignment" -> SplatParameter
-  "return" -> Return
-  "scope_resolution" -> ScopeOperator
-  "self" -> Identifier
-  "singleton_class"  -> SingletonClass
-  "singleton_method" -> SingletonMethod
-  "splat_parameter" -> SplatParameter
-  "string" -> StringLiteral
-  "subshell" -> Subshell
-  "superclass" -> Superclass
-  "symbol" -> SymbolLiteral
-  "true" -> Boolean
-  "unary" -> Unary
-  "unless_modifier" -> Modifier Unless
-  "unless" -> Unless
-  "until_modifier" -> Modifier Until
-  "until" -> Until
-  "when" -> When
-  "while_modifier" -> Modifier While
-  "while" -> While
-  "yield" -> Yield
-  s -> Other s
diff --git a/src/TreeSitter.hs b/src/TreeSitter.hs
index 9e5e0951a..e4d3d9ad4 100644
--- a/src/TreeSitter.hs
+++ b/src/TreeSitter.hs
@@ -21,7 +21,6 @@ import qualified Data.Syntax.Assignment as A
 import Data.Text (Text, pack)
 import Language
 import qualified Language.Go as Go
-import qualified Language.Ruby as Ruby
 import Foreign
 import Foreign.C.String (peekCString)
 import Foreign.Marshal.Array (allocaArray)
@@ -115,7 +114,6 @@ assignTerm language source annotation children allChildren =
   where assignTermByLanguage :: Source -> Category -> [ SyntaxTerm DefaultFields ] -> Maybe (S.Syntax (SyntaxTerm DefaultFields))
         assignTermByLanguage = case languageForTSLanguage language of
           Just Language.Go -> Go.termAssignment
-          Just Ruby -> Ruby.termAssignment
           _ -> \ _ _ _ -> Nothing
 
 defaultTermAssignment :: Source -> Record DefaultFields -> [ SyntaxTerm DefaultFields ] -> IO [ SyntaxTerm DefaultFields ] -> IO (SyntaxTerm DefaultFields)
@@ -192,7 +190,6 @@ categoryForLanguageProductionName = withDefaults . byLanguage
       s -> productionMap s
 
     byLanguage language = case languageForTSLanguage language of
-      Just Ruby -> Ruby.categoryForRubyName
       Just Language.Go -> Go.categoryForGoName
       _ -> Other
 
@@ -200,6 +197,5 @@ categoryForLanguageProductionName = withDefaults . byLanguage
 languageForTSLanguage :: Ptr TS.Language -> Maybe Language
 languageForTSLanguage = flip lookup
   [ (TS.tree_sitter_go, Language.Go)
-  , (TS.tree_sitter_ruby, Ruby)
   , (TS.tree_sitter_typescript, TypeScript)
   ]