diff --git a/Cargo.toml b/Cargo.toml
index 4eab236..f2473d5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -29,7 +29,7 @@ std = []
 [dependencies]
 alga = { version = "0.9", optional = true }
 cgmath = { version = "0.17", optional = true }
-nalgebra = { version = ">=0.14, <0.21", optional = true }
+nalgebra = { version = ">=0.14, <0.20", optional = true }
 num-traits = { version = "0.2", optional = true }
 serde =  { version = "1", optional = true }
 serde_derive = { version = "1", optional = true }