diff --git a/pyproject.toml b/pyproject.toml
index a473f441..30384c2a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ dependencies = [
     "numpy>=1.20",
     "openpyxl",
     "pandas",
-    "power_grid_model>=1.6",
+    "power_grid_model>=1.6.46",
     "pyyaml",
     "structlog",
     "tqdm",