diff --git a/recipes/roller/roll_to_dev.expected/push.json b/recipes/roller/roll_to_dev.expected/push.json
index 4921d24..a41cd68 100644
--- a/recipes/roller/roll_to_dev.expected/push.json
+++ b/recipes/roller/roll_to_dev.expected/push.json
@@ -242,13 +242,20 @@
       "--json-output",
       "/path/to/tmp/json",
       "copy",
-      "UNKNOWN_FIELD cde",
+      "# Updated Comment\nCHANNEL dev\nMAJOR 4\nMINOR 1\nPATCH 2\nPRERELEASE 35\nPRERELEASE_PATCH 0\nUNKNOWN_FIELD cde",
       "[START_DIR]/sdk/tools/VERSION"
     ],
     "cwd": "[START_DIR]/sdk",
     "infra_step": true,
     "name": "write new version file",
     "~followup_annotations": [
+      "@@@STEP_LOG_LINE@VERSION@# Updated Comment@@@",
+      "@@@STEP_LOG_LINE@VERSION@CHANNEL dev@@@",
+      "@@@STEP_LOG_LINE@VERSION@MAJOR 4@@@",
+      "@@@STEP_LOG_LINE@VERSION@MINOR 1@@@",
+      "@@@STEP_LOG_LINE@VERSION@PATCH 2@@@",
+      "@@@STEP_LOG_LINE@VERSION@PRERELEASE 35@@@",
+      "@@@STEP_LOG_LINE@VERSION@PRERELEASE_PATCH 0@@@",
       "@@@STEP_LOG_LINE@VERSION@UNKNOWN_FIELD cde@@@",
       "@@@STEP_LOG_END@VERSION@@@"
     ]
diff --git a/recipes/roller/roll_to_dev.py b/recipes/roller/roll_to_dev.py
index b9dce15..419b642 100644
--- a/recipes/roller/roll_to_dev.py
+++ b/recipes/roller/roll_to_dev.py
@@ -158,7 +158,7 @@
       updated_lines.append(line)
     else:
       field, _ = line.split(' ')
-      updated_lines = ['%s %s' % (field, new_version[field])]
+      updated_lines.append('%s %s' % (field, new_version[field]))
   api.file.write_text('write new version file',
                       api.path['checkout'].join(VERSION_PATH),
                       '\n'.join(updated_lines))
@@ -187,7 +187,7 @@
           'abcdef', 'Subject\n\nMessage\n', new_files=['foo/bar', 'baz/qux']))
   from_ref_version_file = api.step_data(
       'download from_ref version file',
-      api.gitiles.make_encoded_file('''# Comment
+      api.gitiles.make_encoded_file('''# Updated Comment
 CHANNEL abc
 MAJOR 4
 MINOR 1
@@ -216,6 +216,16 @@
       api.post_process(post_process.StatusSuccess),
   )
 
+  expected_version_file = api.post_process(
+      post_process.LogEquals, 'write new version file', 'VERSION',
+      '''# Updated Comment
+CHANNEL dev
+MAJOR 4
+MINOR 1
+PATCH 2
+PRERELEASE 35
+PRERELEASE_PATCH 0
+UNKNOWN_FIELD cde''')
   unmerged = api.step_data('check if commit has been merged before', retcode=1)
   yield api.test(
       'push',
@@ -224,6 +234,7 @@
       from_ref_version_file,
       to_ref_version_file,
       unmerged,
+      expected_version_file,
       api.post_process(post_process.MustRun, 'push to refs/heads/dev'),
       api.post_process(post_process.MustRun, 'tag 4.1.2-35.0.dev'),
       api.post_process(post_process.StatusSuccess),
@@ -236,6 +247,7 @@
       from_ref_version_file,
       to_ref_version_file,
       unmerged,
+      expected_version_file,
       api.post_process(post_process.MustRun, 'push to refs/heads/dev'),
       api.post_process(post_process.MustRun, 'tag 4.1.2-35.0.dev'),
       api.post_process(post_process.StepCommandContains,
@@ -248,7 +260,7 @@
 
   from_ref_version_file = api.step_data(
       'download from_ref version file',
-      api.gitiles.make_encoded_file('''# Comment
+      api.gitiles.make_encoded_file('''# Updated Comment
 CHANNEL abc
 MAJOR 5
 MINOR 2
@@ -257,6 +269,16 @@
 PRERELEASE_PATCH 0
 UNKNOWN_FIELD cde
 '''))
+  expected_version_file = api.post_process(
+      post_process.LogEquals, 'write new version file', 'VERSION',
+      '''# Updated Comment
+CHANNEL dev
+MAJOR 5
+MINOR 2
+PATCH 10
+PRERELEASE 0
+PRERELEASE_PATCH 0
+UNKNOWN_FIELD cde''')
   yield api.test(
       'push-version-mismatch',
       input_properties,
@@ -264,6 +286,7 @@
       from_ref_version_file,
       to_ref_version_file,
       unmerged,
+      expected_version_file,
       api.post_process(post_process.MustRun, 'push to refs/heads/dev'),
       api.post_process(post_process.MustRun, 'tag 5.2.10-0.0.dev'),
       api.post_process(post_process.StatusSuccess),