diff --git a/Cargo.toml b/Cargo.toml
index f7c1f3e3..1613750b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -29,7 +29,7 @@ parity-scale-codec = { version = "3.0.0", default-features = false, features = [
 quickcheck = { version = "1.0.3", optional = true }
 rand = { version = "0.8.5", optional = true, features = ["small_rng"] }
 serde = { version = "1.0.116", optional = true, default-features = false }
-unsigned-varint = { version = "0.7.1", default-features = false }
+unsigned-varint = { version = "0.8.0", default-features = false }
 arbitrary = { version = "1.1.0", optional = true }
 
 core2 = { version = "0.4.0", default-features = false }
diff --git a/codetable/Cargo.toml b/codetable/Cargo.toml
index cc2b539d..76c1a111 100644
--- a/codetable/Cargo.toml
+++ b/codetable/Cargo.toml
@@ -32,7 +32,7 @@ serde = { version = "1.0.158", features = ["derive"], default-features = false,
 
 [dev-dependencies]
 hex = "0.4.2"
-unsigned-varint = { version = "0.7.1", default-features = false }
+unsigned-varint = { version = "0.8.0", default-features = false }
 criterion = "0.5.1"
 rand = "0.8.5"