diff --git a/pyproject.toml b/pyproject.toml
index b924e83..9363e75 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ dependencies = [
     "sympy",
 ]
 description = "API for DE Server"
-version = "5.3b3"
+version = "5.3b4"
 keywords = [
     "EELS",
     "STEM",