diff --git a/pyproject.toml b/pyproject.toml
index 36733f1..9f164ab 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ packages = [
 path = "src/ewatercycle_DA/__init__.py"
 
 [project]
-name = "ewatercycle-DA"
+name = "ewatercycle_DA"
 description = "Implementation of data assimilation for eWaterCycle"
 readme = "README.md"
 license = "Apache-2.0"