diff --git a/Cargo.toml b/Cargo.toml
index 16a9627..858a322 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -65,7 +65,7 @@ parity-scale-codec = { version = "3", optional = true, default-features = false,
     "derive",
     "max-encoded-len",
 ] }
-primitive-types = { version = "0.12", optional = true, default-features = false }
+primitive-types = { version = "0.14", optional = true, default-features = false }
 proptest = { version = "1", optional = true, default-features = false, features = [
     "no_std",
 ] }