diff --git a/labelme/__init__.py b/labelme/__init__.py
index 5e9de2044..e0625639d 100644
--- a/labelme/__init__.py
+++ b/labelme/__init__.py
@@ -13,7 +13,7 @@
 # 2. MINOR version when you add functionality in a backwards-compatible manner;
 # 3. PATCH version when you make backwards-compatible bug fixes.
 # e.g., 1.0.0a0, 1.0.0a1, 1.0.0b0, 1.0.0rc0, 1.0.0, 1.0.0.post0
-__version__ = "5.3.1"
+__version__ = "5.4.0a0"
 
 QT4 = QT_VERSION[0] == "4"
 QT5 = QT_VERSION[0] == "5"