diff --git a/tests/test_formatting.py b/tests/test_formatting.py
index f7cc290..b385abb 100755
--- a/tests/test_formatting.py
+++ b/tests/test_formatting.py
@@ -97,6 +97,16 @@ def test_format_comment_separator(self):
             self._format(code.encode()).decode().splitlines(), expected.splitlines()
         )
 
+    def test_multiple_function_calls(self):
+        """Validates correct line break when a expression with function calls
+        need to be broken. This is a regression test for #69."""
+        code = "f(x) " + "+ f(x)" * 20 + ";"
+        formatted = self._format(code.encode()).decode()
+        self.assertTrue(
+            formatted.splitlines()[0].endswith("("),
+            "expression should not break function calls across lines",
+        )
+
 
 class TestFormattingErrors(unittest.TestCase):
     def _format(self, content):
diff --git a/tree-sitter-zeek b/tree-sitter-zeek
index b1fdab4..92dff79 160000
--- a/tree-sitter-zeek
+++ b/tree-sitter-zeek
@@ -1 +1 @@
-Subproject commit b1fdab493110b542a9deabecf911d8a148649fc2
+Subproject commit 92dff79450f63e56dcb8cdabc8e673ac957caa37