diff --git a/.changes/unreleased/Fixes-20241223-155231.yaml b/.changes/unreleased/Fixes-20241223-155231.yaml
new file mode 100644
index 0000000..42fa0a0
--- /dev/null
+++ b/.changes/unreleased/Fixes-20241223-155231.yaml
@@ -0,0 +1,6 @@
+kind: Fixes
+body: only get modification time on files that match regex pattern
+time: 2024-12-23T15:52:31.73318431-05:00
+custom:
+    Author: otosky
+    Issue: astronomer/astronomer-cosmos#1075
diff --git a/dbt_common/clients/system.py b/dbt_common/clients/system.py
index 5ab681f..dc77697 100644
--- a/dbt_common/clients/system.py
+++ b/dbt_common/clients/system.py
@@ -127,14 +127,16 @@ def find_matching(
             # if ignore_spec.match(relative_dir):
             #     continue
             for local_file in local_files:
+                if not reobj.match(local_file):
+                    continue
+
                 absolute_path = os.path.join(current_path, local_file)
                 relative_path = os.path.relpath(absolute_path, absolute_path_to_search)
                 relative_path_to_root = os.path.join(relative_path_to_search, relative_path)
 
                 modification_time = os.path.getmtime(absolute_path)
-                if reobj.match(local_file) and (
-                    not ignore_spec or not ignore_spec.match_file(relative_path_to_root)
-                ):
+
+                if not ignore_spec or not ignore_spec.match_file(relative_path_to_root):
                     matching.append(
                         {
                             "searched_path": relative_path_to_search,