diff --git a/main/duplicacy_main.go b/main/duplicacy_main.go
index cc87143..1795598 100644
--- a/main/duplicacy_main.go
+++ b/main/duplicacy_main.go
@@ -17,7 +17,7 @@ import (
 
     "github.com/gilbertchen/cli"
 
-    "github.com/gilbertchen/duplicacy"
+    "github.com/gilbertchen/duplicacy/src"
 )
 
 const (
diff --git a/duplicacy_acdclient.go b/src/duplicacy_acdclient.go
similarity index 100%
rename from duplicacy_acdclient.go
rename to src/duplicacy_acdclient.go
diff --git a/duplicacy_acdclient_test.go b/src/duplicacy_acdclient_test.go
similarity index 100%
rename from duplicacy_acdclient_test.go
rename to src/duplicacy_acdclient_test.go
diff --git a/duplicacy_acdstorage.go b/src/duplicacy_acdstorage.go
similarity index 100%
rename from duplicacy_acdstorage.go
rename to src/duplicacy_acdstorage.go
diff --git a/duplicacy_azurestorage.go b/src/duplicacy_azurestorage.go
similarity index 100%
rename from duplicacy_azurestorage.go
rename to src/duplicacy_azurestorage.go
diff --git a/duplicacy_b2client.go b/src/duplicacy_b2client.go
similarity index 100%
rename from duplicacy_b2client.go
rename to src/duplicacy_b2client.go
diff --git a/duplicacy_b2client_test.go b/src/duplicacy_b2client_test.go
similarity index 100%
rename from duplicacy_b2client_test.go
rename to src/duplicacy_b2client_test.go
diff --git a/duplicacy_b2storage.go b/src/duplicacy_b2storage.go
similarity index 100%
rename from duplicacy_b2storage.go
rename to src/duplicacy_b2storage.go
diff --git a/duplicacy_backupmanager.go b/src/duplicacy_backupmanager.go
similarity index 100%
rename from duplicacy_backupmanager.go
rename to src/duplicacy_backupmanager.go
diff --git a/duplicacy_backupmanager_test.go b/src/duplicacy_backupmanager_test.go
similarity index 100%
rename from duplicacy_backupmanager_test.go
rename to src/duplicacy_backupmanager_test.go
diff --git a/duplicacy_chunk.go b/src/duplicacy_chunk.go
similarity index 100%
rename from duplicacy_chunk.go
rename to src/duplicacy_chunk.go
diff --git a/duplicacy_chunk_test.go b/src/duplicacy_chunk_test.go
similarity index 100%
rename from duplicacy_chunk_test.go
rename to src/duplicacy_chunk_test.go
diff --git a/duplicacy_chunkdownloader.go b/src/duplicacy_chunkdownloader.go
similarity index 100%
rename from duplicacy_chunkdownloader.go
rename to src/duplicacy_chunkdownloader.go
diff --git a/duplicacy_chunkmaker.go b/src/duplicacy_chunkmaker.go
similarity index 100%
rename from duplicacy_chunkmaker.go
rename to src/duplicacy_chunkmaker.go
diff --git a/duplicacy_chunkmaker_test.go b/src/duplicacy_chunkmaker_test.go
similarity index 100%
rename from duplicacy_chunkmaker_test.go
rename to src/duplicacy_chunkmaker_test.go
diff --git a/duplicacy_chunkuploader.go b/src/duplicacy_chunkuploader.go
similarity index 100%
rename from duplicacy_chunkuploader.go
rename to src/duplicacy_chunkuploader.go
diff --git a/duplicacy_chunkuploader_test.go b/src/duplicacy_chunkuploader_test.go
similarity index 100%
rename from duplicacy_chunkuploader_test.go
rename to src/duplicacy_chunkuploader_test.go
diff --git a/duplicacy_config.go b/src/duplicacy_config.go
similarity index 100%
rename from duplicacy_config.go
rename to src/duplicacy_config.go
diff --git a/duplicacy_dropboxstorage.go b/src/duplicacy_dropboxstorage.go
similarity index 100%
rename from duplicacy_dropboxstorage.go
rename to src/duplicacy_dropboxstorage.go
diff --git a/duplicacy_entry.go b/src/duplicacy_entry.go
similarity index 100%
rename from duplicacy_entry.go
rename to src/duplicacy_entry.go
diff --git a/duplicacy_entry_test.go b/src/duplicacy_entry_test.go
similarity index 100%
rename from duplicacy_entry_test.go
rename to src/duplicacy_entry_test.go
diff --git a/duplicacy_filereader.go b/src/duplicacy_filereader.go
similarity index 100%
rename from duplicacy_filereader.go
rename to src/duplicacy_filereader.go
diff --git a/duplicacy_filestorage.go b/src/duplicacy_filestorage.go
similarity index 100%
rename from duplicacy_filestorage.go
rename to src/duplicacy_filestorage.go
diff --git a/duplicacy_gcdstorage.go b/src/duplicacy_gcdstorage.go
similarity index 100%
rename from duplicacy_gcdstorage.go
rename to src/duplicacy_gcdstorage.go
diff --git a/duplicacy_gcsstorage.go b/src/duplicacy_gcsstorage.go
similarity index 100%
rename from duplicacy_gcsstorage.go
rename to src/duplicacy_gcsstorage.go
diff --git a/duplicacy_hubicclient.go b/src/duplicacy_hubicclient.go
similarity index 100%
rename from duplicacy_hubicclient.go
rename to src/duplicacy_hubicclient.go
diff --git a/duplicacy_hubicclient_test.go b/src/duplicacy_hubicclient_test.go
similarity index 100%
rename from duplicacy_hubicclient_test.go
rename to src/duplicacy_hubicclient_test.go
diff --git a/duplicacy_hubicstorage.go b/src/duplicacy_hubicstorage.go
similarity index 100%
rename from duplicacy_hubicstorage.go
rename to src/duplicacy_hubicstorage.go
diff --git a/duplicacy_keyring.go b/src/duplicacy_keyring.go
similarity index 100%
rename from duplicacy_keyring.go
rename to src/duplicacy_keyring.go
diff --git a/duplicacy_keyring_windows.go b/src/duplicacy_keyring_windows.go
similarity index 100%
rename from duplicacy_keyring_windows.go
rename to src/duplicacy_keyring_windows.go
diff --git a/duplicacy_log.go b/src/duplicacy_log.go
similarity index 100%
rename from duplicacy_log.go
rename to src/duplicacy_log.go
diff --git a/duplicacy_oneclient.go b/src/duplicacy_oneclient.go
similarity index 100%
rename from duplicacy_oneclient.go
rename to src/duplicacy_oneclient.go
diff --git a/duplicacy_oneclient_test.go b/src/duplicacy_oneclient_test.go
similarity index 100%
rename from duplicacy_oneclient_test.go
rename to src/duplicacy_oneclient_test.go
diff --git a/duplicacy_onestorage.go b/src/duplicacy_onestorage.go
similarity index 100%
rename from duplicacy_onestorage.go
rename to src/duplicacy_onestorage.go
diff --git a/duplicacy_preference.go b/src/duplicacy_preference.go
similarity index 100%
rename from duplicacy_preference.go
rename to src/duplicacy_preference.go
diff --git a/duplicacy_s3storage.go b/src/duplicacy_s3storage.go
similarity index 100%
rename from duplicacy_s3storage.go
rename to src/duplicacy_s3storage.go
diff --git a/duplicacy_sftpstorage.go b/src/duplicacy_sftpstorage.go
similarity index 100%
rename from duplicacy_sftpstorage.go
rename to src/duplicacy_sftpstorage.go
diff --git a/duplicacy_shadowcopy.go b/src/duplicacy_shadowcopy.go
similarity index 100%
rename from duplicacy_shadowcopy.go
rename to src/duplicacy_shadowcopy.go
diff --git a/duplicacy_shadowcopy_windows.go b/src/duplicacy_shadowcopy_windows.go
similarity index 100%
rename from duplicacy_shadowcopy_windows.go
rename to src/duplicacy_shadowcopy_windows.go
diff --git a/duplicacy_snapshot.go b/src/duplicacy_snapshot.go
similarity index 100%
rename from duplicacy_snapshot.go
rename to src/duplicacy_snapshot.go
diff --git a/duplicacy_snapshotmanager.go b/src/duplicacy_snapshotmanager.go
similarity index 100%
rename from duplicacy_snapshotmanager.go
rename to src/duplicacy_snapshotmanager.go
diff --git a/duplicacy_snapshotmanager_test.go b/src/duplicacy_snapshotmanager_test.go
similarity index 100%
rename from duplicacy_snapshotmanager_test.go
rename to src/duplicacy_snapshotmanager_test.go
diff --git a/duplicacy_storage.go b/src/duplicacy_storage.go
similarity index 100%
rename from duplicacy_storage.go
rename to src/duplicacy_storage.go
diff --git a/duplicacy_storage_test.go b/src/duplicacy_storage_test.go
similarity index 100%
rename from duplicacy_storage_test.go
rename to src/duplicacy_storage_test.go
diff --git a/duplicacy_utils.go b/src/duplicacy_utils.go
similarity index 100%
rename from duplicacy_utils.go
rename to src/duplicacy_utils.go
diff --git a/duplicacy_utils_others.go b/src/duplicacy_utils_others.go
similarity index 100%
rename from duplicacy_utils_others.go
rename to src/duplicacy_utils_others.go
diff --git a/duplicacy_utils_test.go b/src/duplicacy_utils_test.go
similarity index 100%
rename from duplicacy_utils_test.go
rename to src/duplicacy_utils_test.go
diff --git a/duplicacy_utils_windows.go b/src/duplicacy_utils_windows.go
similarity index 100%
rename from duplicacy_utils_windows.go
rename to src/duplicacy_utils_windows.go