diff --git a/.gitignore b/.gitignore
index d6b4b1c0..6e24bdee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,2 @@
-/Manifest.toml
+Manifest.toml
 /docs/build/
diff --git a/Project.toml b/Project.toml
index f7bdf435..63ce0e7e 100644
--- a/Project.toml
+++ b/Project.toml
@@ -48,3 +48,4 @@ AxisKeys = "94b1ba4f-4ee9-5380-92f1-94cde586c3c5"
 IntervalSets = "8197267c-284f-5f27-9208-e0e47529a953"
 StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 StructArrays = "09ab397b-f2b6-538f-b94a-2f83cf4a842a"
+Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"