diff --git a/Cargo.lock b/Cargo.lock
index e62c058efe..71946530dd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1700,9 +1700,9 @@ dependencies = [
 
 [[package]]
 name = "either"
-version = "1.8.1"
+version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fcaabb2fef8c910e7f4c7ce9f67a1283a1715879a7c230ca9d6d1ae31f16d91"
+checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07"
 
 [[package]]
 name = "encode_unicode"
diff --git a/Cargo.toml b/Cargo.toml
index dc211f86ce..ad5d608abf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -182,7 +182,7 @@ dlopen_derive = "0.1.4"
 eager = "0.1.0"
 ed25519-dalek = "=1.0.1"
 ed25519-dalek-bip32 = "0.2.0"
-either = "1.8.1"
+either = "1.9.0"
 enum-iterator = "1.4.1"
 env_logger = "0.9.3"
 etcd-client = "0.8.4"
diff --git a/programs/sbf/Cargo.lock b/programs/sbf/Cargo.lock
index 280f63a9a6..94c7475c9c 100644
--- a/programs/sbf/Cargo.lock
+++ b/programs/sbf/Cargo.lock
@@ -1451,9 +1451,9 @@ dependencies = [
 
 [[package]]
 name = "either"
-version = "1.8.1"
+version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fcaabb2fef8c910e7f4c7ce9f67a1283a1715879a7c230ca9d6d1ae31f16d91"
+checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07"
 
 [[package]]
 name = "elf"