diff --git a/HISTORY.rst b/HISTORY.rst
index 2596a50c..fb8f8747 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -4,7 +4,7 @@ Release Notes
 PlatformIO 3.0
 --------------
 
-3.6.4 (2018-??-??)
+3.6.4 (2019-01-23)
 ~~~~~~~~~~~~~~~~~~
 
 * Improved Project Generator for IDEs:
diff --git a/platformio/__init__.py b/platformio/__init__.py
index 07fa8a5d..bb0d7626 100644
--- a/platformio/__init__.py
+++ b/platformio/__init__.py
@@ -14,7 +14,7 @@
 
 import sys
 
-VERSION = (3, 6, "4b1")
+VERSION = (3, 6, 4)
 __version__ = ".".join([str(s) for s in VERSION])
 
 __title__ = "platformio"