diff --git a/Cargo.toml b/Cargo.toml
index 11f10b2..cad48f4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -67,11 +67,5 @@ version = "1.6.1"
 version = "4.0.0"
 optional = true
 
-[target.'cfg(target_os = "redox")'.dependencies.redox_syscall]
-version = "0.5"
-
 [target."cfg(unix)".dependencies.libc]
 version = "0.2.95"
-
-[target."cfg(windows)".dependencies.windows-targets]
-version = "0.52.0"