diff --git a/Cargo.toml b/Cargo.toml
index 79ddaa13..834c554b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -34,9 +34,7 @@ default-features = false
 [dependencies.blas-src]
 version = "0.3"
 default-features = false
-optional = true
 
 [dependencies.lapack-src]
 version = "0.3"
 default-features = false
-optional = true