diff --git a/Cargo.lock b/Cargo.lock
index 964fba2cd..daa5afee2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1155,9 +1155,9 @@ dependencies = [
 
 [[package]]
 name = "fpe"
-version = "0.5.0"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcf3e40fc9accc7218e082db8a75aeea244b8f5db73e591774ef93b4276365e6"
+checksum = "cd910db5f9ca4dc3116f8c46367825807aa2b942f72565f16b4be0b208a00a9e"
 dependencies = [
  "block-modes",
  "cipher",
diff --git a/zebra-chain/Cargo.toml b/zebra-chain/Cargo.toml
index 70868a47f..3467be9f7 100644
--- a/zebra-chain/Cargo.toml
+++ b/zebra-chain/Cargo.toml
@@ -25,7 +25,7 @@ bs58 = { version = "0.4", features = ["check"] }
 byteorder = "1.4"
 chrono = { version = "0.4", features = ["serde"] }
 displaydoc = "0.2.2"
-fpe = "0.5.0"
+fpe = "0.5.1"
 futures = "0.3"
 group = "0.11.0"
 halo2 = "=0.1.0-beta.1"