diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 9b49721..3e35185 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -23,8 +23,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.10'
-          - '1.11'
+          - 'lts'
           - '1'
         os:
           - ubuntu-latest
diff --git a/src/polygons.jl b/src/polygons.jl
index dedbf84..3f039a6 100644
--- a/src/polygons.jl
+++ b/src/polygons.jl
@@ -335,7 +335,7 @@ inv(r::Rectangle) = inv(Polygon(r))
 # these provide shortcuts
 Base.:+(r::Rectangle, z::Number) = Rectangle(r.center + z, r.radii, r.rotation)
 Base.:+(z::Number, r::Rectangle) = r + z
-Base.:-(r::Rectangle) = rectangle(-vertices(r))
+Base.:-(r::Rectangle) = Rectangle(-r.center, r.radii, r.rotation)
 Base.:-(r::Rectangle, z::Number) = Rectangle(r.center - z, r.radii, r.rotation)
 Base.:-(z::Number, r::Rectangle) = (-r) + z