diff --git a/polkadot/Cargo.toml b/polkadot/Cargo.toml
index d6ff78d801..4b0e2047bf 100644
--- a/polkadot/Cargo.toml
+++ b/polkadot/Cargo.toml
@@ -126,7 +126,6 @@ maintenance = { status = "actively-developed" }
 # This list is ordered alphabetically.
 [profile.dev.package]
 blake2 = { opt-level = 3 }
-blake2-rfc = { opt-level = 3 }
 blake2b_simd = { opt-level = 3 }
 chacha20poly1305 = { opt-level = 3 }
 cranelift-codegen = { opt-level = 3 }