diff --git a/Cargo.lock b/Cargo.lock
index 7d3f5b79b57..5ccdfe90805 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -306,9 +306,9 @@ dependencies = [
 
 [[package]]
 name = "env_logger"
-version = "0.8.4"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a19187fea3ac7e84da7dacf48de0c45d63c6a76f9490dae389aead16c243fce3"
+checksum = "0b2cf0344971ee6c64c31be0d530793fba457d322dfec2810c453d0ef228f9c3"
 dependencies = [
  "atty",
  "humantime",
diff --git a/Cargo.toml b/Cargo.toml
index 633183015a3..5724365ec86 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -141,7 +141,7 @@ daemonize = "0.4"
 
 [dev-dependencies]
 byteorder = "1.3"
-env_logger = "0.8"
+env_logger = "0.9"
 byte_string = "1.0"
 tokio = { version = "1", features = ["net", "time", "macros", "io-util"]}
 
diff --git a/crates/shadowsocks-service/Cargo.toml b/crates/shadowsocks-service/Cargo.toml
index bc35e61b9d8..e9375599299 100644
--- a/crates/shadowsocks-service/Cargo.toml
+++ b/crates/shadowsocks-service/Cargo.toml
@@ -119,7 +119,7 @@ winapi = { version = "0.3", features = ["mswsock", "winsock2"] }
 
 [dev-dependencies]
 byteorder = "1.3"
-env_logger = "0.8"
+env_logger = "0.9"
 
 [package.metadata.docs.rs]
 features = ["full", "local-http-rustls", "local-dns", "dns-over-tls", "dns-over-https"]
diff --git a/crates/shadowsocks/Cargo.toml b/crates/shadowsocks/Cargo.toml
index c309fa7e652..70edff593f1 100644
--- a/crates/shadowsocks/Cargo.toml
+++ b/crates/shadowsocks/Cargo.toml
@@ -76,4 +76,4 @@ winapi = { version = "0.3", features = ["mswsock", "winsock2"] }
 nix = "0.22"
 
 [dev-dependencies]
-env_logger = "0.8"
+env_logger = "0.9"