diff --git a/tools/lsp/squirrel/src/AST/Parser.hs b/tools/lsp/squirrel/src/AST/Parser.hs
index 4bd12d778..2b88844ca 100644
--- a/tools/lsp/squirrel/src/AST/Parser.hs
+++ b/tools/lsp/squirrel/src/AST/Parser.hs
@@ -30,6 +30,7 @@ declaration
   <|> do ctor ValueDecl <*> vardecl
   <|> do ctor ValueDecl <*> constdecl
   <|> typedecl
+  <|> do ctor Action <*> attributes
 
 typedecl :: Parser (Declaration ASTInfo)
 typedecl = do
@@ -95,6 +96,7 @@ expr = stubbed "expr" do
     , list_expr
     , has_type
     , string_literal
+    , attributes
     -- , constant
     ]
   where
@@ -103,6 +105,14 @@ expr = stubbed "expr" do
   -- $.disj_expr,
   -- $.fun_expr,
 
+attributes :: Parser (Expr ASTInfo)
+attributes = do
+  subtree "attr_decl" do
+    ctor Attrs <*> do
+      many "attribute" do
+        inside "attribute" do
+          token "String"
+
 string_literal :: Parser (Expr ASTInfo)
 string_literal = do
   ctor Constant <*> do
@@ -134,7 +144,7 @@ assign = do
   subtree "assignment" do
     ctor Assign
       <*> inside "LHS" do
-            inside ":path" qname
+              inside ":path" qname
           <|> projection
       <*> inside "RHS" expr
 
@@ -223,6 +233,9 @@ opCall = do
              <*> inside "arg1" expr
              <*> inside "op"   anything
              <*> inside "arg2" expr
+    <|> do ctor UnOp
+             <*> inside "negate" anything
+             <*> inside "arg"    expr
 
 letExpr = do
   subtree "let_expr" do
@@ -323,8 +336,8 @@ typeTuple = do
 -- example = "../../../src/test/contracts/application.ligo"
 -- example = "../../../src/test/contracts/address.ligo"
 -- example = "../../../src/test/contracts/amount.ligo"
-example = "../../../src/test/contracts/annotation.ligo"
--- example = "../../../src/test/contracts/application.ligo"
--- example = "../../../src/test/contracts/application.ligo"
--- example = "../../../src/test/contracts/application.ligo"
+-- example = "../../../src/test/contracts/annotation.ligo"
+-- example = "../../../src/test/contracts/arithmetic.ligo"
+-- example = "../../../src/test/contracts/assign.ligo"
+example = "../../../src/test/contracts/attributes.ligo"
 -- example = "../../../src/test/contracts/application.ligo"
diff --git a/tools/lsp/squirrel/src/AST/Types.hs b/tools/lsp/squirrel/src/AST/Types.hs
index 3703bcaa4..f1ee94a68 100644
--- a/tools/lsp/squirrel/src/AST/Types.hs
+++ b/tools/lsp/squirrel/src/AST/Types.hs
@@ -84,11 +84,13 @@ data Expr info
   | Constant  info (Constant info)
   | Ident     info (QualifiedName info)
   | BinOp     info (Expr info) Text (Expr info)
+  | UnOp      info Text (Expr info)
   | Record    info [Assignment info]
   | If        info (Expr info) (Expr info) (Expr info)
   | Assign    info (QualifiedName info) (Expr info)
   | List      info [Expr info]
   | Annot     info (Expr info) (Type info)
+  | Attrs     info [Text]
   | WrongExpr      Error
   deriving (Show) via PP (Expr info)
 
@@ -238,11 +240,13 @@ instance Pretty (Expr i) where
     Constant  _ constant   -> pp constant
     Ident     _ qname      -> pp qname
     BinOp     _ l o r      -> parens (pp l <+> pp o <+> pp r)
+    UnOp      _   o r      -> parens (pp o <+> pp r)
     Record    _ az         -> "record [" <> (fsep $ punctuate ";" $ map pp az) <> "]"
     If        _ b t e      -> fsep ["if" <+> pp b, nest 2 $ "then" <+> pp t, nest 2 $ "else" <+> pp e]
     Assign    _ l r        -> hang (pp l <+> ":=") 2 (pp r)
     List      _ l          -> "[" <> fsep (punctuate ";" $ map pp l) <> "]"
     Annot     _ n t        -> ("(" <> pp n) <+> ":" <+> (pp t <> ")")
+    Attrs     _ ts         -> "attributes [" <> fsep (punctuate ";" $ map pp ts) <> "]"
     WrongExpr   err        -> pp err
 
 instance Pretty (Assignment i) where