diff --git a/Cargo.toml b/Cargo.toml
index 0456c29..86e96c0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -28,7 +28,7 @@ std = []
 
 [dependencies]
 cgmath = { version = "0.17", optional = true }
-nalgebra = { version = "0.21", optional = true }
+nalgebra = { version = ">=0.21, <0.23", optional = true }
 num-traits = { version = "0.2", optional = true }
 serde =  { version = "1", optional = true }
 serde_derive = { version = "1", optional = true }