diff --git a/CHANGELOG.md b/CHANGELOG.md
index da1c86a9e11..e357afc038a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,9 +8,13 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 Note: Can be used with `oxsecurity/megalinter@beta` in your GitHub Action mega-linter.yml file, or with `oxsecurity/megalinter:beta` docker image
 
-- Secure PRE_COMMANDS and POST_COMMANDS by default
+- Linter enhancements & fixes
+  - New variable **TERRAFORM_TFLINT_SECURED_ENV** with default value `true`. Set to `false` to allow `tflint --init` to access your env vars.
+
+- Core
+  - Secure PRE_COMMANDS and POST_COMMANDS by default
   - Can be disabled with **secured_env: false** in the command definition
-- New variable **TERRAFORM_TFLINT_SECURED_ENV** with default value `true`. Set to `false` to allow `tflint --init` to access your env vars.
+  - Manage v6 retrocompatibility with FILTER_REGEX_INCLUDE and FILTER_REGEX_EXCLUDE expression
 
 - Linter versions upgrades
   - [checkstyle](https://checkstyle.sourceforge.io) from 10.11.0 to **10.12.0** on 2023-05-27
diff --git a/megalinter/tests/test_megalinter/filters_test.py b/megalinter/tests/test_megalinter/filters_test.py
index 845519cd033..16317c483b4 100644
--- a/megalinter/tests/test_megalinter/filters_test.py
+++ b/megalinter/tests/test_megalinter/filters_test.py
@@ -105,6 +105,26 @@ def test_filter_files_with_file_extensions(self):
                 sorted(filtered_files), sorted(expected), f"check {file_extensions}"
             )
 
+    def test_filter_regex_exclude_single_level(self):
+        all_files = [
+            "index.html",
+            "target/index.html",
+        ]
+        filtered_files = utils.filter_files(
+            all_files=all_files,
+            filter_regex_include=None,
+            filter_regex_exclude=["(^index.html)"],
+            file_names_regex=[],
+            file_extensions=["*"],
+            ignored_files=[],
+            ignore_generated_files=False,
+        )
+        self.assertListEqual(
+            sorted(filtered_files),
+            sorted(["target/index.html"]),
+            "check regex_exclude_multilevel",
+        )
+
     def test_filter_regex_exclude_multilevel(self):
         all_files = [
             "should/be/excluded/descriptor-level/test.md",
diff --git a/megalinter/utils.py b/megalinter/utils.py
index 665f1f49d62..00c90312d67 100644
--- a/megalinter/utils.py
+++ b/megalinter/utils.py
@@ -151,15 +151,19 @@ def filter_files(
         base_file_name = os.path.basename(file)
         _, file_extension = os.path.splitext(base_file_name)
         # Skip according to FILTER_REGEX_INCLUDE
-        if filter_regex_include_object and not filter_regex_include_object.search(
-            file_with_workspace
+        if filter_regex_include_object and (
+            not filter_regex_include_object.search(file)
+            # Compatibility with v6 regexes
+            and not filter_regex_include_object.search(file_with_workspace)
         ):
             continue
         # Skip according to FILTER_REGEX_EXCLUDE list
         excluded_by_regex = False
         for filter_regex_exclude_object in filter_regex_exclude_objects:
-            if filter_regex_exclude_object and filter_regex_exclude_object.search(
-                file_with_workspace
+            if filter_regex_exclude_object and (
+                filter_regex_exclude_object.search(file)
+                # Compatibility with v6 regexes
+                or filter_regex_exclude_object.search(file_with_workspace)
             ):
                 excluded_by_regex = True
                 break