diff --git a/Project.toml b/Project.toml
index 82b83f9..6d5d7eb 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "VoronoiGraph"
 uuid = "e5f3e3e8-00d7-4f74-8011-648b521326aa"
 authors = ["Sikorski <sikorski@zib.de> and contributors"]
-version = "0.2.0"
+version = "0.2.1"
 
 [deps]
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
@@ -20,7 +20,7 @@ ProgressMeter = "1"
 RecipesBase = "1"
 SpecialFunctions = "1"
 StaticArrays = "0.12, 1"
-julia = "1.6"
+julia = "1.6, 1.7"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
diff --git a/src/voronoi.jl b/src/voronoi.jl
index a2d46be..9aca5f3 100644
--- a/src/voronoi.jl
+++ b/src/voronoi.jl
@@ -86,10 +86,11 @@ function walkray(sig::Sigma, r::Point, xs::Points, searcher, i)
     end
     sig′, t = raycast(sig_del, r, u, xs, searcher)
     if t < Inf
-        sig = sig′
-        r = r + t*u
+        r′ = r + t*u
+        return sig′, r′
+    else
+        return sig, r  # if the vertex has an unbounded ray, return the same vertex
     end
-    return sig, r
 end
 
 """ BFS of vertices starting from `S0` """