diff --git a/projects/extension/build.py b/projects/extension/build.py
index 167a2455d..6812a5d47 100755
--- a/projects/extension/build.py
+++ b/projects/extension/build.py
@@ -41,6 +41,7 @@
 def versions() -> list[str]:
     # ADD NEW VERSIONS TO THE FRONT OF THIS LIST! STAY SORTED PLEASE
     return [
+        "0.4.2-dev",
         "0.4.1",  # released
         "0.4.0",  # released
         "0.3.0",  # deprecated