diff --git a/pyproject.toml b/pyproject.toml
index bcb9f30..f9add50 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -56,7 +56,7 @@ SourceCode = "https://github.com/florisla/stm32loader"
 
 
 [tool.bumpversion]
-current_version = "0.6.0"
+current_version = "0.7.0-dev"
 commit = true
 tag = true
 message = "release: Bump version number from v{current_version} to v{new_version}"
diff --git a/stm32loader/__init__.py b/stm32loader/__init__.py
index c26ea20..b463799 100644
--- a/stm32loader/__init__.py
+++ b/stm32loader/__init__.py
@@ -1,4 +1,4 @@
 """Flash firmware to STM32 microcontrollers over a serial connection."""
 
-__version_info__ = (0, 6, 0)
+__version_info__ = (0, 7, 0, 'dev')
 __version__ = "-".join(str(part) for part in __version_info__).replace("-", ".", 2)