diff --git a/scale-decode/Cargo.toml b/scale-decode/Cargo.toml
index 36207d6..27504ed 100644
--- a/scale-decode/Cargo.toml
+++ b/scale-decode/Cargo.toml
@@ -29,7 +29,7 @@ derive = ["dep:scale-decode-derive"]
 codec = { package = "parity-scale-codec", version = "3.0.0", default-features = false, features = ["derive"] }
 scale-bits = { version = "0.6.0", default-features = false }
 scale-decode-derive = { workspace = true, optional = true }
-primitive-types = { version = "0.12.0", optional = true, default-features = false }
+primitive-types = { version = "0.13.1", optional = true, default-features = false }
 smallvec = "1.10.0"
 derive_more = { version = "1.0.0", default-features = false, features = ["from", "display"] }
 scale-type-resolver = { version = "0.2.0", default-features = false }
@@ -41,6 +41,6 @@ bitvec = { version = "1.0.1", default-features = false }
 trybuild = "1.0.72"
 # Enable the scale-info feature for testing.
 scale-bits = { version = "0.6.0", default-features = false, features = ["scale-info"] }
-primitive-types = { version = "0.12.0", default-features = false, features = ["scale-info"] }
+primitive-types = { version = "0.13.1", default-features = false, features = ["scale-info"] }
 scale-type-resolver = { version = "0.2.0", default-features = false, features = ["scale-info"] }
 proptest = "1.4.0"