diff --git a/pyproject.toml b/pyproject.toml
index edb4130..3fbcc5d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "cumulus-message-adapter-passthrough"
-version = "1.2.0a3"
+version = "1.2.0a4"
 description = "A simple lambda which pass input through output"
 authors = ["PODAAC IngestAndArchive <podaac@jpl.nasa.gov>"]