diff --git a/platformio/commands/home/rpc/handlers/project.py b/platformio/commands/home/rpc/handlers/project.py
index e21331d8..dcb42ed7 100644
--- a/platformio/commands/home/rpc/handlers/project.py
+++ b/platformio/commands/home/rpc/handlers/project.py
@@ -55,6 +55,14 @@ class ProjectRPC(object):
         config.update(data, clear=True)
         return config.save()
 
+    @staticmethod
+    def config_update_description(path, text):
+        config = ProjectConfig(path, parse_extra=False, expand_interpolations=False)
+        if not config.has_section("platformio"):
+            config.add_section("platformio")
+        config.set("platformio", "description", text)
+        return config.save()
+
     @staticmethod
     def get_config_schema():
         return get_config_options_schema()