diff --git a/HISTORY.rst b/HISTORY.rst
index c941ba72..975ddbb3 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -6,6 +6,11 @@ Release Notes
 PlatformIO 4.0
 --------------
 
+4.0.2 (2019-08-23)
+~~~~~~~~~~~~~~~~~~
+
+* Fixed an issue with a broken `LDF <http://docs.platformio.org/page/librarymanager/ldf.html>`__ when checking for framework compatibility (`issue #2940 <https://github.com/platformio/platformio-core/issues/2940>`_)
+
 4.0.1 (2019-08-22)
 ~~~~~~~~~~~~~~~~~~
 
diff --git a/docs b/docs
index 29f80d45..3f5d12ca 160000
--- a/docs
+++ b/docs
@@ -1 +1 @@
-Subproject commit 29f80d45f2d7fe14918b507d84ec8badc54fe087
+Subproject commit 3f5d12ca25f4af666871d3d87d191a4deb478937
diff --git a/platformio/__init__.py b/platformio/__init__.py
index 7f7b65d0..ee53de46 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, 0, 1)
+VERSION = (4, 0, 2)
 __version__ = ".".join([str(s) for s in VERSION])
 
 __title__ = "platformio"
diff --git a/platformio/builder/tools/piolib.py b/platformio/builder/tools/piolib.py
index 1848cbf7..b5ace28c 100644
--- a/platformio/builder/tools/piolib.py
+++ b/platformio/builder/tools/piolib.py
@@ -755,7 +755,7 @@ class PlatformIOLibBuilder(LibBuilderBase):
 
     @property
     def lib_compat_mode(self):
-        return self.validate_ldf_mode(
+        return self.validate_compat_mode(
             self.env.GetProjectOption(
                 "lib_compat_mode",
                 self._manifest.get("build", {}).get(