diff --git a/plexus/Cargo.toml b/plexus/Cargo.toml
index dc4e5dd..5c91769 100644
--- a/plexus/Cargo.toml
+++ b/plexus/Cargo.toml
@@ -48,7 +48,7 @@ geometry-ultraviolet = ["theon/geometry-ultraviolet"]
 unstable = []
 
 [dependencies]
-approx = "^0.3.0"
+approx = "^0.5.0"
 ahash = "^0.6.0"
 arrayvec = "^0.6.0"
 decorum = "^0.3.1"