diff --git a/Cargo.lock b/Cargo.lock
index 46e065e5..fe633e38 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -258,9 +258,9 @@ dependencies = [
 
 [[package]]
 name = "asynchronous-codec"
-version = "0.6.2"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4057f2c32adbb2fc158e22fb38433c8e9bbf76b75a4732c7c0cbaf695fb65568"
+checksum = "a860072022177f903e59730004fb5dc13db9275b79bb2aef7ba8ce831956c233"
 dependencies = [
  "bytes",
  "futures-sink",
@@ -1428,9 +1428,9 @@ checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b"
 
 [[package]]
 name = "unsigned-varint"
-version = "0.7.2"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6889a77d49f1f013504cec6bf97a2c730394adedaeb1deb5ea08949a50541105"
+checksum = "eb066959b24b5196ae73cb057f45598450d2c5f71460e98c49b738086eff9c06"
 dependencies = [
  "asynchronous-codec",
  "bytes",
diff --git a/examples/blockchain/Cargo.toml b/examples/blockchain/Cargo.toml
index 22bf17c5..e7fa7a87 100644
--- a/examples/blockchain/Cargo.toml
+++ b/examples/blockchain/Cargo.toml
@@ -20,4 +20,4 @@ parking_lot = "0.12"
 sha3 = "0.10"
 time = { version = "0.3", features = ["formatting", "macros", "local-offset"] }
 tokio = { version = "1", features = ["macros", "rt", "rt-multi-thread", "io-util", "net", "time"] }
-unsigned-varint = { version = "0.7.2", features = ["futures", "asynchronous_codec"] }
+unsigned-varint = { version = "0.8.0", features = ["futures", "asynchronous_codec"] }