diff --git a/i18n/english.yml b/i18n/english.yml
index 3c082b74a..ee3ddcfb3 100644
--- a/i18n/english.yml
+++ b/i18n/english.yml
@@ -487,6 +487,9 @@ components:
     AddCustomFileTransformation: 
       label: Add custom file in GTFS.
       name: Add custom file transformation
+    AppendToFileTransformation: 
+      label: Append lines to GTFS.
+      name: Append to file transformation
     general:
       fileDefined: below text
       filePlaceholder: '[choose file]'
diff --git a/lib/manager/components/transform/FeedTransformRules.js b/lib/manager/components/transform/FeedTransformRules.js
index 689bf691e..96384ef54 100644
--- a/lib/manager/components/transform/FeedTransformRules.js
+++ b/lib/manager/components/transform/FeedTransformRules.js
@@ -35,7 +35,8 @@ const feedTransformationTypes = [
   'ReplaceFileFromStringTransformation',
   'NormalizeFieldTransformation',
   'PreserveCustomFieldsTransformation',
-  'AddCustomFileTransformation'
+  'AddCustomFileTransformation',
+  'AppendToFileTransformation'
 ]
 
 type TransformRulesProps = {
diff --git a/lib/manager/components/transform/FeedTransformation.js b/lib/manager/components/transform/FeedTransformation.js
index 9a6b709d7..215bd0ae8 100644
--- a/lib/manager/components/transform/FeedTransformation.js
+++ b/lib/manager/components/transform/FeedTransformation.js
@@ -38,6 +38,9 @@ const transformationTypes = {
   ReplaceFileFromStringTransformation: {
     component: ReplaceFileFromString
   },
+  AppendToFileTransformation: {
+    component: ReplaceFileFromString
+  },
   ReplaceFileFromVersionTransformation: {
     component: ReplaceFileFromVersion
   },