diff --git a/HISTORY.rst b/HISTORY.rst
index 94bb9be7..0dd505bf 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -20,13 +20,6 @@ PlatformIO Core 5
   - Configure a custom pattern to determine when debugging server is started with a new `debug_server_ready_pattern <https://docs.platformio.org/page/projectconf/section_env_debug.html#debug-server-ready-pattern>`__ option
   - Fixed an issue with silent hanging when a custom debug server is not found (`issue #3756 <https://github.com/platformio/platformio-core/issues/3756>`_)
 
-* **Static Code Analysis**
-
-  - Updated analysis tools:
-
-    * `Cppcheck <https://docs.platformio.org/page/plus/check-tools/cppcheck.html>`__ v2.4.1 with new checks and MISRA improvements
-    * `PVS-Studio <https://docs.platformio.org/page/plus/check-tools/pvs-studio.html>`__ v7.12 with new diagnostics and extended capabilities for security and safety standards
-
 * **Package Management**
 
   - Improved a package publishing process:
@@ -38,12 +31,23 @@ PlatformIO Core 5
 
   - Added a new option ``--non-interactive`` to `pio package publish <https://docs.platformio.org/page/core/userguide/package/cmd_publish.html>`__ command
 
+* **Build System**
+
+  - Upgraded build engine to the SCons 4.2 (`release notes <https://github.com/SCons/scons/blob/rel_4.2.0/CHANGES.txt>`_)
+  - Fixed an issue with broken binary file extension when a custom ``PROGNAME`` contains dot symbols (`issue #3906 <https://github.com/platformio/platformio-core/issues/3906>`_)
+
+* **Static Code Analysis**
+
+  - Updated analysis tools:
+
+    * `Cppcheck <https://docs.platformio.org/page/plus/check-tools/cppcheck.html>`__ v2.4.1 with new checks and MISRA improvements
+    * `PVS-Studio <https://docs.platformio.org/page/plus/check-tools/pvs-studio.html>`__ v7.12 with new diagnostics and extended capabilities for security and safety standards
+
 * **Miscellaneous**
 
   - Ensure that a serial port is ready before running unit tests on a remote target (`issue #3742 <https://github.com/platformio/platformio-core/issues/3742>`_)
   - Fixed an error "Unknown development platform" when running unit tests on a clean machine (`issue #3901 <https://github.com/platformio/platformio-core/issues/3901>`_)
   - Fixed an issue when "main.cpp" was generated for a new project for 8-bit development platforms (`issue #3872 <https://github.com/platformio/platformio-core/issues/3872>`_)
-  - Fixed an issue with broken binary file extension when a custom ``PROGNAME`` contains dot symbols (`issue #3906 <https://github.com/platformio/platformio-core/issues/3906>`_)
 
 5.1.1 (2021-03-17)
 ~~~~~~~~~~~~~~~~~~
diff --git a/platformio/__init__.py b/platformio/__init__.py
index 91c2a4c3..dc05d601 100644
--- a/platformio/__init__.py
+++ b/platformio/__init__.py
@@ -14,7 +14,7 @@
 
 import sys
 
-VERSION = (5, 2, "0a9")
+VERSION = (5, 2, "0b1")
 __version__ = ".".join([str(s) for s in VERSION])
 
 __title__ = "platformio"