diff --git a/Cargo.toml b/Cargo.toml
index 50fff8e..ce186d4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,6 +26,10 @@ rand = "0.7"
 serde_yaml = "0.8"
 typetag = "0.1"
 
+[dependencies.nalgebra]
+version = "0.20.0"
+features = ["serde-serialize"]
+
 [dependencies.serde]
 version = "1.0"
 features = ["derive"]