diff --git a/Cargo.lock b/Cargo.lock
index a4d4b77430c..6eef5e7e0f5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -934,9 +934,9 @@ checksum = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
 
 [[package]]
 name = "bytemuck"
-version = "1.20.0"
+version = "1.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b37c88a63ffd85d15b406896cc343916d7cf57838a847b3a6f2ca5d39a5695a"
+checksum = "ef657dfab802224e671f5818e9a4935f9b1957ed18e58292690cc39e7a4092a3"
 dependencies = [
  "bytemuck_derive",
 ]
diff --git a/libraries/concurrent-merkle-tree/Cargo.toml b/libraries/concurrent-merkle-tree/Cargo.toml
index 9df9f096c5b..9da6cc01c97 100644
--- a/libraries/concurrent-merkle-tree/Cargo.toml
+++ b/libraries/concurrent-merkle-tree/Cargo.toml
@@ -13,7 +13,7 @@ sol-log = ["log"]
 
 [dependencies]
 solana-program = ">=1.18.11,<=2"
-bytemuck = "1.20"
+bytemuck = "1.21"
 thiserror = "2.0.8"
 
 [dev-dependencies]
diff --git a/libraries/discriminator/Cargo.toml b/libraries/discriminator/Cargo.toml
index 7579c29d3d3..fae99bbeea3 100644
--- a/libraries/discriminator/Cargo.toml
+++ b/libraries/discriminator/Cargo.toml
@@ -12,7 +12,7 @@ borsh = ["dep:borsh"]
 
 [dependencies]
 borsh = { version = "1", optional = true }
-bytemuck = { version = "1.20.0", features = ["derive"] }
+bytemuck = { version = "1.21.0", features = ["derive"] }
 solana-program-error = "2.1.0"
 solana-sha256-hasher = "2.1.0"
 spl-discriminator-derive = { version = "0.2.0", path = "./derive" }
diff --git a/libraries/pod/Cargo.toml b/libraries/pod/Cargo.toml
index a6363a93391..88090b7f543 100644
--- a/libraries/pod/Cargo.toml
+++ b/libraries/pod/Cargo.toml
@@ -13,7 +13,7 @@ borsh = ["dep:borsh"]
 
 [dependencies]
 borsh = { version = "1.5.3", optional = true }
-bytemuck = { version = "1.20.0" }
+bytemuck = { version = "1.21.0" }
 bytemuck_derive = { version = "1.8.0" }
 num-derive = "0.4"
 num-traits = "0.2"
diff --git a/libraries/tlv-account-resolution/Cargo.toml b/libraries/tlv-account-resolution/Cargo.toml
index fffd7b83197..736f73a38c2 100644
--- a/libraries/tlv-account-resolution/Cargo.toml
+++ b/libraries/tlv-account-resolution/Cargo.toml
@@ -12,7 +12,7 @@ serde-traits = ["dep:serde"]
 test-sbf = []
 
 [dependencies]
-bytemuck = { version = "1.20.0", features = ["derive"] }
+bytemuck = { version = "1.21.0", features = ["derive"] }
 num-derive = "0.4"
 num-traits = "0.2"
 serde = { version = "1.0.216", optional = true }
diff --git a/libraries/type-length-value/Cargo.toml b/libraries/type-length-value/Cargo.toml
index 63da3aeee59..0ef918ebb35 100644
--- a/libraries/type-length-value/Cargo.toml
+++ b/libraries/type-length-value/Cargo.toml
@@ -12,7 +12,7 @@ exclude = ["js/**"]
 derive = ["dep:spl-type-length-value-derive"]
 
 [dependencies]
-bytemuck = { version = "1.20.0", features = ["derive"] }
+bytemuck = { version = "1.21.0", features = ["derive"] }
 num-derive = "0.4"
 num-traits = "0.2"
 solana-account-info = "2.1.0"
diff --git a/record/program/Cargo.toml b/record/program/Cargo.toml
index 669a295ed0d..5d9ebe6fc79 100644
--- a/record/program/Cargo.toml
+++ b/record/program/Cargo.toml
@@ -12,7 +12,7 @@ no-entrypoint = []
 test-sbf = []
 
 [dependencies]
-bytemuck = { version = "1.20.0", features = ["derive"] }
+bytemuck = { version = "1.21.0", features = ["derive"] }
 num-derive = "0.4"
 num-traits = "0.2"
 solana-account-info = "2.1.0"
diff --git a/slashing/program/Cargo.toml b/slashing/program/Cargo.toml
index 2f07908e5fe..783102e8e22 100644
--- a/slashing/program/Cargo.toml
+++ b/slashing/program/Cargo.toml
@@ -13,7 +13,7 @@ test-sbf = []
 
 [dependencies]
 bitflags = { version = "2.6.0", features = ["serde"] }
-bytemuck = { version = "1.19.0", features = ["derive"] }
+bytemuck = { version = "1.21.0", features = ["derive"] }
 num_enum = "0.7.3"
 generic-array = { version = "0.14.7", features = ["serde"], default-features = false }
 bincode = "1.3.3"
diff --git a/stake-pool/program/Cargo.toml b/stake-pool/program/Cargo.toml
index 0718ffa98a9..583893f990c 100644
--- a/stake-pool/program/Cargo.toml
+++ b/stake-pool/program/Cargo.toml
@@ -14,7 +14,7 @@ test-sbf = []
 [dependencies]
 arrayref = "0.3.9"
 borsh = "1.5.3"
-bytemuck = "1.20"
+bytemuck = "1.21"
 num-derive = "0.4"
 num-traits = "0.2"
 num_enum = "0.7.3"
diff --git a/token-group/interface/Cargo.toml b/token-group/interface/Cargo.toml
index 655cf235be5..49a7c6332d0 100644
--- a/token-group/interface/Cargo.toml
+++ b/token-group/interface/Cargo.toml
@@ -8,7 +8,7 @@ license = "Apache-2.0"
 edition = "2021"
 
 [dependencies]
-bytemuck = "1.20.0"
+bytemuck = "1.21.0"
 num-derive = "0.4"
 num-traits = "0.2"
 solana-decode-error = "2.1.0"
diff --git a/token-lending/program/Cargo.toml b/token-lending/program/Cargo.toml
index 63dee31b109..bff11a1ed35 100644
--- a/token-lending/program/Cargo.toml
+++ b/token-lending/program/Cargo.toml
@@ -13,7 +13,7 @@ test-sbf = []
 
 [dependencies]
 arrayref = "0.3.9"
-bytemuck = "1.20.0"
+bytemuck = "1.21.0"
 num-derive = "0.4"
 num-traits = "0.2"
 solana-program = "2.1.0"
diff --git a/token-wrap/program/Cargo.toml b/token-wrap/program/Cargo.toml
index 371f4aa9dc4..30fa2944786 100644
--- a/token-wrap/program/Cargo.toml
+++ b/token-wrap/program/Cargo.toml
@@ -12,7 +12,7 @@ no-entrypoint = []
 test-sbf = []
 
 [dependencies]
-bytemuck = { version = "1.20.0", features = ["derive"] }
+bytemuck = { version = "1.21.0", features = ["derive"] }
 num_enum = "0.7"
 solana-program = "2.1.0"
 spl-associated-token-account = { version = "6.0.0", path = "../../associated-token-account/program", features = ["no-entrypoint"] }
diff --git a/token/client/Cargo.toml b/token/client/Cargo.toml
index c7d3d94a2b5..94547634576 100644
--- a/token/client/Cargo.toml
+++ b/token/client/Cargo.toml
@@ -10,7 +10,7 @@ version = "0.13.0"
 [dependencies]
 async-trait = "0.1"
 bincode = "1.3.2"
-bytemuck = "1.20.0"
+bytemuck = "1.21.0"
 futures = "0.3.31"
 futures-util = "0.3"
 solana-banks-interface = "2.1.0"
diff --git a/token/confidential-transfer/ciphertext-arithmetic/Cargo.toml b/token/confidential-transfer/ciphertext-arithmetic/Cargo.toml
index 51eba041460..865ee202d0d 100644
--- a/token/confidential-transfer/ciphertext-arithmetic/Cargo.toml
+++ b/token/confidential-transfer/ciphertext-arithmetic/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2021"
 
 [dependencies]
 base64 = "0.22.1"
-bytemuck = "1.20.0"
+bytemuck = "1.21.0"
 solana-curve25519 = "2.1.0"
 solana-zk-sdk = "2.1.0"
 
diff --git a/token/confidential-transfer/elgamal-registry/Cargo.toml b/token/confidential-transfer/elgamal-registry/Cargo.toml
index b9e7326b7d9..6524babd167 100644
--- a/token/confidential-transfer/elgamal-registry/Cargo.toml
+++ b/token/confidential-transfer/elgamal-registry/Cargo.toml
@@ -12,7 +12,7 @@ no-entrypoint = []
 test-sbf = []
 
 [dependencies]
-bytemuck = { version = "1.20.0", features = ["derive"] }
+bytemuck = { version = "1.21.0", features = ["derive"] }
 solana-program = "2.1.0"
 solana-zk-sdk = "2.1.0"
 spl-pod = { version = "0.5.0", path = "../../../libraries/pod" }
diff --git a/token/confidential-transfer/proof-extraction/Cargo.toml b/token/confidential-transfer/proof-extraction/Cargo.toml
index df280b4326f..3276aba0b04 100644
--- a/token/confidential-transfer/proof-extraction/Cargo.toml
+++ b/token/confidential-transfer/proof-extraction/Cargo.toml
@@ -8,7 +8,7 @@ license = "Apache-2.0"
 edition = "2021"
 
 [dependencies]
-bytemuck = "1.20.0"
+bytemuck = "1.21.0"
 solana-curve25519 = "2.1.0"
 solana-program = "2.1.0"
 solana-zk-sdk = "2.1.0"
diff --git a/token/program-2022-test/Cargo.toml b/token/program-2022-test/Cargo.toml
index 99c4e1842d6..2e280ee764a 100644
--- a/token/program-2022-test/Cargo.toml
+++ b/token/program-2022-test/Cargo.toml
@@ -18,7 +18,7 @@ walkdir = "2"
 [dev-dependencies]
 async-trait = "0.1"
 borsh = "1.5.3"
-bytemuck = "1.20.0"
+bytemuck = "1.21.0"
 futures-util = "0.3"
 solana-program = "2.1.0"
 solana-program-test = "2.1.0"
diff --git a/token/program-2022/Cargo.toml b/token/program-2022/Cargo.toml
index 9aa33a41bb7..28f2094f0d9 100644
--- a/token/program-2022/Cargo.toml
+++ b/token/program-2022/Cargo.toml
@@ -18,7 +18,7 @@ zk-ops = []
 
 [dependencies]
 arrayref = "0.3.9"
-bytemuck = { version = "1.20.0", features = ["derive"] }
+bytemuck = { version = "1.21.0", features = ["derive"] }
 num-derive = "0.4"
 num-traits = "0.2"
 num_enum = "0.7.3"
diff --git a/token/program/Cargo.toml b/token/program/Cargo.toml
index c0788db3792..72153f7eb79 100644
--- a/token/program/Cargo.toml
+++ b/token/program/Cargo.toml
@@ -14,7 +14,7 @@ test-sbf = []
 
 [dependencies]
 arrayref = "0.3.9"
-bytemuck = "1.20.0"
+bytemuck = "1.21.0"
 num-derive = "0.4"
 num-traits = "0.2"
 num_enum = "0.7.3"
diff --git a/token/transfer-hook/interface/Cargo.toml b/token/transfer-hook/interface/Cargo.toml
index 601189d01f2..c8b70cad60d 100644
--- a/token/transfer-hook/interface/Cargo.toml
+++ b/token/transfer-hook/interface/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2021"
 
 [dependencies]
 arrayref = "0.3.9"
-bytemuck = { version = "1.20.0", features = ["derive"] }
+bytemuck = { version = "1.21.0", features = ["derive"] }
 num-derive = "0.4"
 num-traits = "0.2"
 solana-account-info = "2.1.0"