diff --git a/Cargo.lock b/Cargo.lock
index f9f2de3..d9e5b17 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -898,7 +898,7 @@ checksum = "1ecab6c735a6bb4139c0caafd0cc3635748bbb3acf4550e8138122099251f309"
 [[package]]
 name = "smoltcp"
 version = "0.8.0"
-source = "git+https://github.com/smoltcp-rs/smoltcp?branch=master#25c539bb7c96789270f032ede2a967cf0fe5cf57"
+source = "git+https://github.com/smoltcp-rs/smoltcp?rev=25c539bb7c96789270f032ede2a967cf0fe5cf57#25c539bb7c96789270f032ede2a967cf0fe5cf57"
 dependencies = [
  "bitflags",
  "byteorder",
diff --git a/Cargo.toml b/Cargo.toml
index 25f2c48..0018d4b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,7 @@ clap = { version = "2.33", default-features = false, features = ["suggestions"]
 log = "0.4"
 pretty_env_logger = "0.3"
 anyhow = "1"
-smoltcp = { git = "https://github.com/smoltcp-rs/smoltcp", branch = "master" }
+smoltcp = { git = "https://github.com/smoltcp-rs/smoltcp", rev = "25c539bb7c96789270f032ede2a967cf0fe5cf57" }
 tokio = { version = "1", features = ["full"] }
 futures = "0.3.17"
 rand = "0.8.4"