diff --git a/Cargo.toml b/Cargo.toml
index af2cb249e..01c01b451 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ keywords = ["linear-algebra"]
 libc = "0.2"
 
 [dependencies.num-complex]
-version = "0.3"
+version = "0.4"
 default-features = false
 
 [dependencies.blas-sys]