diff --git a/pyproject.toml b/pyproject.toml
index 940e775..6dbc2e8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,6 +21,7 @@ Repository = "https://git.dgnum.eu/DGNum/dgsi"
 
 [tool.djlint]
 blank_line_after_tag = "load,extends"
+custom_blocks = "slot,element"
 format_js = true
 indent = 2
 max_blank_lines = 1