diff --git a/dbt_meshify/storage/jinja_blocks.py b/dbt_meshify/storage/jinja_blocks.py
index 2332e5c..2eb55d2 100644
--- a/dbt_meshify/storage/jinja_blocks.py
+++ b/dbt_meshify/storage/jinja_blocks.py
@@ -24,7 +24,11 @@ def find_block_range(file_content: str, block_type: str, name: str) -> Tuple[int
         end_line = None
 
         for match in re.finditer(
-            r"{%-?\s*" + block_type + r"\s*" + name + r"\s*([(a-zA-Z0-9=,_ \'\")]*)\s*-?%}",
+            r"{%-?[\s\n]*"
+            + block_type
+            + r"[\s\n]*"
+            + name
+            + r"([(a-zA-Z0-9=,_ \[\]{}\"'\s\n)]*)[\s\n]*-?%}",
             file_content,
             re.MULTILINE,
         ):
diff --git a/tests/unit/test_jinja_blocks.py b/tests/unit/test_jinja_blocks.py
index 1ad60e9..42b1fb1 100644
--- a/tests/unit/test_jinja_blocks.py
+++ b/tests/unit/test_jinja_blocks.py
@@ -116,6 +116,44 @@
 {% endmacro %}
 """
 
+simple_macro_empty_list_defaults = """\
+
+
+{% macro test_macro(num=[]) %}
+  {{ num }}
+{% endmacro %}
+"""
+
+simple_macro_empty_bracket_defaults = """\
+
+
+{% macro test_macro(num={}) %}
+  {{ num }}
+{% endmacro %}
+"""
+
+simple_macro_empty_string_defaults = """\
+
+
+{% macro test_macro(num='') %}
+  {{ num }}
+{% endmacro %}
+"""
+
+simple_macro_new_line_args = """\
+
+
+{% macro test_macro(
+    num='',
+    list=[],
+    dict={},
+    int=8,
+    string='dave'
+    ) %}
+  {{ num }}
+{% endmacro %}
+"""
+
 
 class TestJinjaBlock:
     def test_from_file_detects_block_range(self):
@@ -168,6 +206,28 @@ def test_from_file_detects_block_range_simple_macro_int_defaults(self):
         range = JinjaBlock.find_block_range(simple_macro_int_defaults, "macro", "test_macro")
         assert range == (2, 58)
 
+    def test_from_file_detects_block_range_simple_macro_empty_list_defaults(self):
+        range = JinjaBlock.find_block_range(
+            simple_macro_empty_list_defaults, "macro", "test_macro"
+        )
+        assert range == (2, 59)
+
+    def test_from_file_detects_block_range_simple_macro_empty_bracket_defaults(self):
+        range = JinjaBlock.find_block_range(
+            simple_macro_empty_bracket_defaults, "macro", "test_macro"
+        )
+        assert range == (2, 59)
+
+    def test_from_file_detects_block_range_simple_macro_empty_string_defaults(self):
+        range = JinjaBlock.find_block_range(
+            simple_macro_empty_string_defaults, "macro", "test_macro"
+        )
+        assert range == (2, 59)
+
+    def test_from_file_detects_block_range_simple_macro_new_line_args(self):
+        range = JinjaBlock.find_block_range(simple_macro_new_line_args, "macro", "test_macro")
+        assert range == (2, 125)
+
     def test_from_file_extracts_content(self):
         content = JinjaBlock.isolate_content(string, 2, 72)
         assert (