diff --git a/pyproject.toml b/pyproject.toml
index d237e27..0e9a22c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "dq-suite-amsterdam"
-version = "0.7.7"
+version = "0.9.1"
 authors = [
   { name="Arthur Kordes", email="a.kordes@amsterdam.nl" },
   { name="Aysegul Cayir Aydar", email="a.cayiraydar@amsterdam.nl" },
@@ -30,6 +30,7 @@ dev = [
     'pylint ~= 2.16',
     'autoflake ~= 2.0.1',
     'coverage ~= 7.6.1',
+    'delta-spark ~= 3.2.0',
 ]
 
 [tool.isort]