diff --git a/CHANGELOG.md b/CHANGELOG.md
index 822d610..d45ab66 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 ### 0.5.6
 
 - Add `Command` class. (#148) (#141) (#123) (#106)
+- Fix: migrate doesn't use source_field in unique_together. (#181)
 
 ### 0.5.5
 
diff --git a/aerich/__init__.py b/aerich/__init__.py
index ef44daf..0b874be 100644
--- a/aerich/__init__.py
+++ b/aerich/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.5.5"
+__version__ = "0.5.6"
 
 import os
 from pathlib import Path