diff --git a/pid/__init__.py b/pid/__init__.py
index a2de2d4..f5c1b01 100644
--- a/pid/__init__.py
+++ b/pid/__init__.py
@@ -18,7 +18,7 @@
     from .posix import PidFile  # NOQA
 
 
-__version__ = "2.2.5"
+__version__ = "3.0.0"
 __all__ = [
     '__version__',
     'DEFAULT_PID_DIR',