diff --git a/kin/grammar/PBXProjLexer.py b/kin/grammar/PBXProjLexer.py
index 8f48af5..36aed58 100644
--- a/kin/grammar/PBXProjLexer.py
+++ b/kin/grammar/PBXProjLexer.py
@@ -1,4 +1,4 @@
-# Generated from PBXProj.g4 by ANTLR 4.13.2
+# Generated from PBXProj.g4 by ANTLR 4.13.1
 from antlr4 import *
 from io import StringIO
 import sys
@@ -1434,7 +1434,7 @@ class PBXProjLexer(Lexer):
 
     def __init__(self, input=None, output:TextIO = sys.stdout):
         super().__init__(input, output)
-        self.checkVersion("4.13.2")
+        self.checkVersion("4.13.1")
         self._interp = LexerATNSimulator(self, self.atn, self.decisionsToDFA, PredictionContextCache())
         self._actions = None
         self._predicates = None
diff --git a/kin/grammar/PBXProjListener.py b/kin/grammar/PBXProjListener.py
index 426e60a..dfa8d91 100644
--- a/kin/grammar/PBXProjListener.py
+++ b/kin/grammar/PBXProjListener.py
@@ -1,4 +1,4 @@
-# Generated from PBXProj.g4 by ANTLR 4.13.2
+# Generated from PBXProj.g4 by ANTLR 4.13.1
 from antlr4 import *
 if "." in __name__:
     from .PBXProjParser import PBXProjParser
diff --git a/kin/grammar/PBXProjParser.py b/kin/grammar/PBXProjParser.py
index 36a7918..633ddc4 100644
--- a/kin/grammar/PBXProjParser.py
+++ b/kin/grammar/PBXProjParser.py
@@ -1,4 +1,4 @@
-# Generated from PBXProj.g4 by ANTLR 4.13.2
+# Generated from PBXProj.g4 by ANTLR 4.13.1
 # encoding: utf-8
 from antlr4 import *
 from io import StringIO
@@ -1339,7 +1339,7 @@ class PBXProjParser ( Parser ):
 
     def __init__(self, input:TokenStream, output:TextIO = sys.stdout):
         super().__init__(input, output)
-        self.checkVersion("4.13.2")
+        self.checkVersion("4.13.1")
         self._interp = ParserATNSimulator(self, self.atn, self.decisionsToDFA, self.sharedContextCache)
         self._predicates = None