diff --git a/Cargo.lock b/Cargo.lock
index 387d578e..f685e019 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -406,9 +406,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bitflags"
-version = "2.0.2"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "487f1e0fcbe47deb8b0574e646def1c903389d95241dd1bbcc6ce4a715dfc0c1"
+checksum = "c70beb79cbb5ce9c4f8e20849978f34225931f665bb49efa6982875a4d5facb3"
 
 [[package]]
 name = "bitflags-serde-legacy"
@@ -416,7 +416,7 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dfecf9fa72400de980120c09d7027140daa6541292245ff61a4ad3b89771680e"
 dependencies = [
- "bitflags 2.0.2",
+ "bitflags 2.1.0",
  "serde",
 ]
 
@@ -5656,7 +5656,7 @@ dependencies = [
 name = "zebra-chain"
 version = "1.0.0-beta.22"
 dependencies = [
- "bitflags 2.0.2",
+ "bitflags 2.1.0",
  "bitflags-serde-legacy",
  "bitvec",
  "blake2b_simd",
@@ -5761,7 +5761,7 @@ dependencies = [
 name = "zebra-network"
 version = "1.0.0-beta.22"
 dependencies = [
- "bitflags 2.0.2",
+ "bitflags 2.1.0",
  "byteorder",
  "bytes",
  "chrono",
diff --git a/zebra-chain/Cargo.toml b/zebra-chain/Cargo.toml
index 88139785..4724e4ca 100644
--- a/zebra-chain/Cargo.toml
+++ b/zebra-chain/Cargo.toml
@@ -34,7 +34,7 @@ bench = ["zebra-test"]
 
 # Cryptography
 bitvec = "1.0.1"
-bitflags = "2.0.2"
+bitflags = "2.1.0"
 bitflags-serde-legacy = "0.1.0"
 blake2b_simd = "1.0.1"
 blake2s_simd = "1.0.1"
diff --git a/zebra-network/Cargo.toml b/zebra-network/Cargo.toml
index 485ad4ff..8060c1b2 100644
--- a/zebra-network/Cargo.toml
+++ b/zebra-network/Cargo.toml
@@ -14,7 +14,7 @@ default = []
 proptest-impl = ["proptest", "proptest-derive", "zebra-chain/proptest-impl"]
 
 [dependencies]
-bitflags = "2.0.2"
+bitflags = "2.1.0"
 byteorder = "1.4.3"
 bytes = "1.4.0"
 chrono = { version = "0.4.24", default-features = false, features = ["clock", "std"] }