diff --git a/tokio-native-tls/Cargo.toml b/tokio-native-tls/Cargo.toml
index c24930a..9b47807 100644
--- a/tokio-native-tls/Cargo.toml
+++ b/tokio-native-tls/Cargo.toml
@@ -30,8 +30,6 @@ vendored = ["native-tls/vendored"]
 
 [dev-dependencies]
 tokio = { version = "1.0", features = ["macros", "rt", "rt-multi-thread", "io-util", "net"] }
-tokio-util = { version = "0.7.4", features = ["full"] }
-
 cfg-if = "1.0"
 env_logger = { version = "0.10", default-features = false }
 futures = { version = "0.3.0", features = ["async-await"] }
@@ -39,28 +37,5 @@ futures = { version = "0.3.0", features = ["async-await"] }
 tempfile = "3.1"
 lazy_static = "1.4.0"
 
-[target.'cfg(all(not(target_os = "macos"), not(windows), not(target_os = "ios")))'.dev-dependencies]
-openssl = "0.10"
-
-[target.'cfg(any(target_os = "macos", target_os = "ios"))'.dev-dependencies]
-security-framework = "0.2"
-
-[target.'cfg(windows)'.dev-dependencies]
-schannel = "0.1"
-
-[target.'cfg(windows)'.dev-dependencies.winapi]
-version = "0.3"
-features = [
-  "lmcons",
-  "basetsd",
-  "minwinbase",
-  "minwindef",
-  "ntdef",
-  "sysinfoapi",
-  "timezoneapi",
-  "wincrypt",
-  "winerror",
-]
-
 [package.metadata.docs.rs]
 all-features = true