diff --git a/Cargo.lock b/Cargo.lock
index 454bedb..bc54285 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1120,9 +1120,9 @@ checksum = "fe0f37c9e8f3c5a4a66ad655a93c74daac4ad00c441533bf5c6e7990bb42604e"
 
 [[package]]
 name = "smoltcp"
-version = "0.7.1"
+version = "0.7.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97173c1ef35b0a09304cb3882eba594761243005847cbbf6124f966e8da6519a"
+checksum = "3e4a069bef843d170df47e7c0a8bf8d037f217d9f5b325865acc3e466ffe40d3"
 dependencies = [
  "bitflags",
  "byteorder",
diff --git a/Cargo.toml b/Cargo.toml
index e0f0f25..863d71c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -40,7 +40,7 @@ bitflags = "1.2.1"
 byte = "0.2.4"
 
 [dependencies.smoltcp]
-version = "0.7.1"
+version = "0.7.5"
 features = [ "proto-ipv6" ]
 default-features = false
 optional = true