diff --git a/pyproject.toml b/pyproject.toml
index 5aea4c0..fe3faa1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,8 @@ authors = [
 requires-python = ">=3.10"
 dependencies = [
     "deepmerge",
-    "safer"
+    "openpyxl",
+    "safer",
 ]
 
 [project.scripts]