diff --git a/sdk/Cargo.toml b/sdk/Cargo.toml
index b51e618507049d..16ad7ded89d81b 100644
--- a/sdk/Cargo.toml
+++ b/sdk/Cargo.toml
@@ -74,6 +74,7 @@ frozen-abi = [
     "solana-fee-structure/frozen-abi",
     "solana-account/frozen-abi",
     "solana-cluster-type/frozen-abi",
+    "solana-hard-forks/frozen-abi",
     "solana-inflation/frozen-abi",
     "solana-poh-config/frozen-abi",
     "solana-program/frozen-abi",