diff --git a/pyproject.toml b/pyproject.toml
index 04b4907a..5d0de4f5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ name = "sed-processor"
 packages = [
     {include = "sed"}
 ]
-version = "0.3.3a0"
+version = "0.3.3a1"
 description = "Single Event Data Frame Processor: Backend to handle photoelectron resolved datastreams"
 authors = ["OpenCOMPES team <sed-processor@mpes.science>"]
 readme = "README.md"