1 files changed, 1 insertions, 1 deletions
diff --git a/lexer.py b/lexer.py
index a16a38a..6963b77 100644
--- a/lexer.py
+++ b/lexer.py
@@ -9,7 +9,7 @@ class SystemTLexer(OcamlLexer):
     aliases = ['syst']
     filenames = ['*.syst']
 
-    EXTRA_KEYWORDS = ['primrec', 'fold', 'foldmatch', 'roll']
+    EXTRA_KEYWORDS = ['primrec', 'fold', 'foldmatch', 'roll', 'roll2']
 
     def get_tokens_unprocessed(self, text):
         for index, token, value in OcamlLexer.get_tokens_unprocessed(self, text):