diff --git a/HISTORY.rst b/HISTORY.rst
index bf65b80f..8185432e 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -9,10 +9,10 @@ PlatformIO Core 4
 4.2.1 (2020-02-??)
 ~~~~~~~~~~~~~~~~~~
 
+* Improved VSCode template with special ``forceInclude`` field for direct inludes via ``-include`` flag (`issue #3379 <https://github.com/platformio/platformio-core/issues/3379>`_)
 * Improved support of PIO Home on card-sized PC (Raspberry Pi, etc.) (`issue #3313 <https://github.com/platformio/platformio-core/issues/3313>`_)
 * Froze "marshmallow" dependency to 2.X for Python 2 (`issue #3380 <https://github.com/platformio/platformio-core/issues/3380>`_)
 * Fixed "TypeError: unsupported operand type(s)" when system environment variable is used by project configuration parser (`issue #3377 <https://github.com/platformio/platformio-core/issues/3377>`_)
-* Improved VSCode template with special `forceInclude` field for direct inludes via `-include` flag (`issue #3379 <https://github.com/platformio/platformio-core/issues/3379>`_)
 
 
 4.2.0 (2020-02-12)
diff --git a/platformio/__init__.py b/platformio/__init__.py
index ef86e1f2..461bc7b6 100644
--- a/platformio/__init__.py
+++ b/platformio/__init__.py
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-VERSION = (4, 2, "1a1")
+VERSION = (4, 2, "1a2")
 __version__ = ".".join([str(s) for s in VERSION])
 
 __title__ = "platformio"
diff --git a/setup.py b/setup.py
index edccd3b9..06a915a6 100644
--- a/setup.py
+++ b/setup.py
@@ -35,7 +35,7 @@ install_requires = [
     "semantic_version>=2.8.1,<3",
     "tabulate>=0.8.3,<1",
     "pyelftools>=0.25,<1",
-    "marshmallow%s" % (">=2,<3" if PY2 else ">=3"),
+    "marshmallow%s" % (">=2,<3" if PY2 else ">=2"),
 ]