diff --git a/doc/source/cli.rst b/doc/source/cli.rst
index bcab3898..f732fff1 100644
--- a/doc/source/cli.rst
+++ b/doc/source/cli.rst
@@ -198,23 +198,6 @@ Example with validation:
       -e global=/opt/aic-clcp-manifests \
       collect <site_name> -s /workspace -x P004 --validate
 
-Impacted
---------
-
-Find sites impacted by changed files.
-
-**-i / --input**
-
-List of impacted files.
-
-**-o / --output**
-
-Where to output.
-
-::
-
-    ./pegleg impacted -i <input_stream> -o <output_stream>
-
 List
 ----
 
diff --git a/src/bin/pegleg/pegleg/cli.py b/src/bin/pegleg/pegleg/cli.py
index 533b8249..3a14895e 100644
--- a/src/bin/pegleg/pegleg/cli.py
+++ b/src/bin/pegleg/pegleg/cli.py
@@ -137,24 +137,6 @@ def collect(*, save_location, validate, exclude_lint, warn_lint, site_name):
     engine.site.collect(site_name, save_location)
 
 
-@site.command(help='Find sites impacted by changed files')
-@click.option(
-    '-i',
-    '--input',
-    'input_stream',
-    type=click.File(mode='r'),
-    default=sys.stdin,
-    help='List of impacted files')
-@click.option(
-    '-o',
-    '--output',
-    'output_stream',
-    type=click.File(mode='w'),
-    default=sys.stdout)
-def impacted(*, input_stream, output_stream):
-    engine.site.impacted(input_stream, output_stream)
-
-
 @site.command('list', help='List known sites')
 @click.option(
     '-o',
diff --git a/src/bin/pegleg/pegleg/engine/site.py b/src/bin/pegleg/pegleg/engine/site.py
index e19ceec7..b78accf3 100644
--- a/src/bin/pegleg/pegleg/engine/site.py
+++ b/src/bin/pegleg/pegleg/engine/site.py
@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import collections
 import csv
 import json
 import logging
@@ -23,7 +22,7 @@ import yaml
 
 from pegleg.engine import util
 
-__all__ = ('collect', 'impacted', 'list_', 'show', 'render')
+__all__ = ('collect', 'list_', 'show', 'render')
 
 LOG = logging.getLogger(__name__)
 
@@ -89,20 +88,6 @@ def collect(site_name, save_location):
         _collect_to_stdout(site_name)
 
 
-def impacted(input_stream, output_stream):
-    mapping = _build_impact_mapping()
-    impacted_sites = set()
-
-    for line in input_stream:
-        line = line.strip()
-        directory = util.files.directory_for(path=line)
-        if directory is not None:
-            impacted_sites.update(mapping[directory])
-
-    for site_name in sorted(impacted_sites):
-        output_stream.write(site_name + '\n')
-
-
 def render(site_name, output_stream):
     documents = []
     for filename in util.definition.site_files(site_name):
@@ -148,14 +133,3 @@ def show(site_name, output_stream):
     data = util.definition.load_as_params(site_name)
     data['files'] = list(util.definition.site_files(site_name))
     json.dump(data, output_stream, indent=2, sort_keys=True)
-
-
-def _build_impact_mapping():
-    mapping = collections.defaultdict(set)
-
-    for site_name in util.files.list_sites():
-        params = util.definition.load_as_params(site_name)
-        for directory in util.files.directories_for(**params):
-            mapping[directory].add(site_name)
-
-    return mapping
diff --git a/src/bin/pegleg/pegleg/engine/util/definition.py b/src/bin/pegleg/pegleg/engine/util/definition.py
index 6db78233..32bd3c0c 100644
--- a/src/bin/pegleg/pegleg/engine/util/definition.py
+++ b/src/bin/pegleg/pegleg/engine/util/definition.py
@@ -56,6 +56,13 @@ def load(site, primary_repo_base=None):
 
 def load_as_params(site_name, primary_repo_base=None):
     definition = load(site_name, primary_repo_base)
+    # TODO(felipemonteiro): Currently we are filtering out "revision" from
+    # the params that are returned by this function because it is no longer
+    # supported. This is a workaround. As soon as the site definition repos
+    # switch to real repository format, then we can drop that workaround.
+    # Ideally, we should:
+    # 1) validate the site-definition.yaml format using lint module
+    # 2) extract only the required params here
     params = definition.get('data', {})
     params['site_name'] = site_name
     return params
diff --git a/src/bin/pegleg/tests/unit/engine/test_selectable_linting.py b/src/bin/pegleg/tests/unit/engine/test_selectable_linting.py
index dcf374ee..27283696 100644
--- a/src/bin/pegleg/tests/unit/engine/test_selectable_linting.py
+++ b/src/bin/pegleg/tests/unit/engine/test_selectable_linting.py
@@ -25,6 +25,7 @@ no longer relevant and so the lint logic for this rule needs to be updated.
 For more information, see: https://storyboard.openstack.org/#!/story/2003762
 """
 
+
 @mock.patch.object(lint, '_verify_deckhand_render', return_value=[])
 @mock.patch.object(lint, '_verify_no_unexpected_files', return_value=[])
 def test_lint_excludes_P001(*args):