diff --git a/detect_secrets/filters/heuristic.py b/detect_secrets/filters/heuristic.py
index a7b661668..c95995d65 100644
--- a/detect_secrets/filters/heuristic.py
+++ b/detect_secrets/filters/heuristic.py
@@ -208,6 +208,7 @@ def is_lock_file(filename: str) -> bool:
         'Pipfile.lock',
         'poetry.lock',
         'Cargo.lock',
+        'packages.lock.json',
     }
 
 
diff --git a/tests/filters/heuristic_filter_test.py b/tests/filters/heuristic_filter_test.py
index 3906a8feb..1962731ae 100644
--- a/tests/filters/heuristic_filter_test.py
+++ b/tests/filters/heuristic_filter_test.py
@@ -135,8 +135,9 @@ def test_is_indirect_reference(line, result):
 
 
 def test_is_lock_file():
-    # Basic test
+    # Basic tests
     assert filters.heuristic.is_lock_file('composer.lock')
+    assert filters.heuristic.is_lock_file('packages.lock.json')
 
     # file path
     assert filters.heuristic.is_lock_file('path/yarn.lock')