diff --git a/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerActivity.java b/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerActivity.java
index 1a371c1b..50713ced 100644
--- a/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerActivity.java
+++ b/component/scanner/src/main/java/one/nem/lacerta/component/scanner/ScannerManagerActivity.java
@@ -237,7 +237,7 @@ public class ScannerManagerActivity extends AppCompatActivity {
             Bitmap[] bitmaps = new Bitmap[croppedImages.size()];
             croppedImages.toArray(bitmaps);
             logger.debug(TAG, "bitmaps.length: " + bitmaps.length);
-            addPagesToDocumentDetail(documentDetail, bitmaps, null).join();
+            addPagesToDocumentDetail(documentDetail, bitmaps, "Initial Commit").join();
             document.updateDocument(documentDetail).join();
             dialog.dismiss();
             finish();
@@ -249,7 +249,7 @@ public class ScannerManagerActivity extends AppCompatActivity {
         return CompletableFuture.runAsync(() -> {
             try {
                 document.updateDocument(documentProcessorFactory.create(documentDetail).addNewPagesToLast(bitmaps).getDocumentDetail()).join();
-                lacertaVcsFactory.create(documentDetail.getMeta().getId()).generateRevisionAtCurrent(commitMessage == null ? "Update" : commitMessage);
+                lacertaVcsFactory.create(documentDetail.getMeta().getId()).generateRevisionAtCurrent(commitMessage == null ? "NONE" : commitMessage);
             } catch (Exception e) {
                 logger.error(TAG, "Error: " + e.getMessage());
                 logger.e_code("9dff2a28-20e8-4ccd-9d04-f0c7646faa6a");
@@ -278,9 +278,8 @@ public class ScannerManagerActivity extends AppCompatActivity {
                 return;
             }
             documentProcessor.updatePageAtIndex(croppedImages.get(0), index);
-            logger.debug(TAG, "documentProcessor.getPageCount(): " + documentProcessor.getPageCount()
-                + ", documentDetail.getPages().size(): " + documentDetail.getPages().size());
             document.updateDocument(documentProcessor.getDocumentDetail()).join();
+            lacertaVcsFactory.create(documentDetail.getMeta().getId()).generateRevisionAtCurrent(index + "ページ目を更新"); // TODO-rca: メッセージを動的にする, 指定できるようにする
             dialog.dismiss();
         });
     }
diff --git a/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ViewerContainerFragment.java b/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ViewerContainerFragment.java
index 98ff5f4b..6ccd0b7c 100644
--- a/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ViewerContainerFragment.java
+++ b/component/viewer/src/main/java/one/nem/lacerta/component/viewer/ViewerContainerFragment.java
@@ -27,6 +27,8 @@ import javax.inject.Inject;
 
 import dagger.hilt.android.AndroidEntryPoint;
 import one.nem.lacerta.component.common.LacertaApplyTagDialog;
+import one.nem.lacerta.component.common.LacertaSelectRevDialog;
+import one.nem.lacerta.component.common.LacertaSelectRevDialogListener;
 import one.nem.lacerta.component.common.picker.LacertaFilePickerDialog;
 import one.nem.lacerta.data.Document;
 import one.nem.lacerta.data.LacertaLibrary;
@@ -236,7 +238,7 @@ public class ViewerContainerFragment extends Fragment {
             toolbar.inflateMenu(R.menu.viewer_menu);
             toolbar.setOnMenuItemClickListener(item -> {
                 if (item.getItemId() == R.id.action_open_vcs_rev_list) {
-                    Toast.makeText(getContext(), "Work in progress", Toast.LENGTH_SHORT).show();
+                    showRevList();
                     return true;
                 } else if (item.getItemId() == R.id.action_rename) {
                     renameDocument();
@@ -260,6 +262,25 @@ public class ViewerContainerFragment extends Fragment {
         });
     }
 
+    private void showRevList() {
+        LacertaSelectRevDialog lacertaSelectRevDialog = new LacertaSelectRevDialog();
+        lacertaSelectRevDialog.setDocumentId(this.documentId).setTitle("リビジョンの選択").setMessage("リビジョンを選択してください。").setNegativeButtonText("キャンセル");
+        lacertaSelectRevDialog.setListener(new LacertaSelectRevDialogListener() {
+            @Override
+            public void onItemSelected(String revId) {
+                logger.debug("ViewerContainerFragment", "Dialog Result: revId: " + revId);
+                getParentFragmentManager().beginTransaction()
+                        .replace(R.id.nav_host_fragment, ViewerListFragment.newInstance(documentId, documentName, revId))
+                        .commit();
+            }
+
+            @Override
+            public void onDialogCanceled() {
+            }
+        });
+        lacertaSelectRevDialog.show(getParentFragmentManager(), "select_rev_dialog");
+    }
+
     private void applyTag() {
         LacertaApplyTagDialog lacertaApplyTagDialog = new LacertaApplyTagDialog();
         lacertaApplyTagDialog