diff --git a/PyFunceble/storage.py b/PyFunceble/storage.py
index 37880e9e..da260c44 100644
--- a/PyFunceble/storage.py
+++ b/PyFunceble/storage.py
@@ -61,7 +61,7 @@
 from PyFunceble.storage_facility import get_config_directory
 
 PROJECT_NAME: str = "PyFunceble"
-PROJECT_VERSION: str = "4.2.29.dev (Blue Duckling: Tulip)"
+PROJECT_VERSION: str = "4.3.0a1.dev (Blue Duckling: Tulip)"
 
 DISTRIBUTED_CONFIGURATION_FILENAME: str = ".PyFunceble_production.yaml"
 
diff --git a/version.yaml b/version.yaml
index 958dda47..94f6a4d3 100644
--- a/version.yaml
+++ b/version.yaml
@@ -1,4 +1,4 @@
-current_version: '4.2.29.dev (Blue Duckling: Tulip)'
+current_version: '4.3.0a1.dev (Blue Duckling: Tulip)'
 deprecated:
 - 3.0.21
 - 3.1.20
@@ -6,6 +6,7 @@ deprecated:
 - 4.0.0a1
 - 4.1.0b1
 - 4.2.0a1
+- 4.3.0a1
 force_update:
     minimal_version:
     - 2.58.0