diff --git a/.gitlab/ci/build.yml b/.gitlab/ci/build.yml
index de71c540122..94defbcff11 100644
--- a/.gitlab/ci/build.yml
+++ b/.gitlab/ci/build.yml
@@ -344,7 +344,11 @@ generate_build_child_pipeline:
     expire_in: 1 week
     when: always
   script:
-    - run_cmd python tools/ci/dynamic_pipelines/scripts/generate_build_child_pipeline.py
+    - run_cmd idf-ci --debug gitlab build-child-pipeline
+      -p components
+      -p examples
+      -p tools/test_apps
+      --modified-files $MR_MODIFIED_FILES
 
 build_child_pipeline:
   stage: build
diff --git a/tools/ci/dynamic_pipelines/scripts/generate_build_child_pipeline.py b/tools/ci/dynamic_pipelines/scripts/generate_build_child_pipeline.py
deleted file mode 100644
index 580d45eccec..00000000000
--- a/tools/ci/dynamic_pipelines/scripts/generate_build_child_pipeline.py
+++ /dev/null
@@ -1,82 +0,0 @@
-# SPDX-FileCopyrightText: 2024-2025 Espressif Systems (Shanghai) CO LTD
-# SPDX-License-Identifier: Apache-2.0
-"""This file is used for generating the child pipeline for build jobs."""
-
-import argparse
-import logging
-import os
-
-import __init__  # noqa: F401 # inject the system path
-from idf_build_apps.utils import semicolon_separated_str_to_list
-from idf_ci.idf_gitlab import build_child_pipeline
-from idf_ci.utils import setup_logging
-from idf_ci_utils import IDF_PATH
-
-BUILD_CHILD_PIPELINE_FILEPATH = os.path.join(IDF_PATH, 'build_child_pipeline.yml')
-TEST_PATHS = ['examples', os.path.join('tools', 'test_apps'), 'components']
-
-
-def _separate_str_to_list(s: str) -> list[str]:
-    """
-    Gitlab env file will escape the doublequotes in the env file, so we need to remove them
-
-    For example,
-
-    in pipeline.env file we have
-
-    MR_MODIFIED_COMPONENTS="app1;app2"
-    MR_MODIFIED_FILES="main/app1.c;main/app2.c"
-
-    gitlab will load the doublequotes as well, so we need to remove the doublequotes
-    """
-    return semicolon_separated_str_to_list(s.strip('"'))  # type: ignore
-
-
-def main(arguments: argparse.Namespace) -> None:
-    setup_logging(logging.DEBUG)
-    build_child_pipeline(
-        paths=args.paths,
-        modified_files=args.modified_files,
-        compare_manifest_sha_filepath=args.compare_manifest_sha_filepath,
-        yaml_output=args.yaml_output,
-    )
-
-
-if __name__ == '__main__':
-    parser = argparse.ArgumentParser(
-        description='Generate build child pipeline',
-        formatter_class=argparse.ArgumentDefaultsHelpFormatter,
-    )
-    parser.add_argument(
-        '-o',
-        '--yaml-output',
-        default=BUILD_CHILD_PIPELINE_FILEPATH,
-        help='Output YAML path',
-    )
-    # use relative path to avoid absolute path in pipeline
-    parser.add_argument(
-        '-p',
-        '--paths',
-        nargs='+',
-        default=TEST_PATHS,
-        help='Paths to the apps to build.',
-    )
-    parser.add_argument(
-        '--compare-manifest-sha-filepath',
-        default=os.path.join(IDF_PATH, '.manifest_sha'),
-        help='Path to the recorded manifest sha file generated by `idf-build-apps dump-manifest-sha`',
-    )
-    parser.add_argument(
-        '--modified-files',
-        type=_separate_str_to_list,
-        default=os.getenv('MR_MODIFIED_FILES'),
-        help='semicolon-separated string which specifies the modified files. '
-        'app with `depends_filepatterns` set in the corresponding manifest files would only be built '
-        'if any of the specified file pattern matches any of the specified modified files. '
-        'If set to "", the value would be considered as None. '
-        'If set to ";", the value would be considered as an empty list',
-    )
-
-    args = parser.parse_args()
-
-    main(args)