diff --git a/HISTORY.rst b/HISTORY.rst
index 6fcbf37ea4..ffa4b48991 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -4,7 +4,7 @@ Release Notes
 PlatformIO 3.0
 --------------
 
-3.5.4 (2018-??-??)
+3.5.4 (2018-07-03)
 ~~~~~~~~~~~~~~~~~~
 
 * Improved removing of default build flags using `build_unflags <http://docs.platformio.org/page/projectconf/section_env_build.html#build-unflags>`__ option
diff --git a/platformio/__init__.py b/platformio/__init__.py
index da19c94d95..7daf5a850a 100644
--- a/platformio/__init__.py
+++ b/platformio/__init__.py
@@ -14,7 +14,7 @@
 
 import sys
 
-VERSION = (3, 5, "4a1")
+VERSION = (3, 5, 4)
 __version__ = ".".join([str(s) for s in VERSION])
 
 __title__ = "platformio"