diff --git a/Cargo.lock b/Cargo.lock
index 41b4e549..e4f29be0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -440,9 +440,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bitflags"
-version = "2.1.0"
+version = "2.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c70beb79cbb5ce9c4f8e20849978f34225931f665bb49efa6982875a4d5facb3"
+checksum = "24a6904aef64d73cf10ab17ebace7befb918b82164785cb89907993be7f83813"
 
 [[package]]
 name = "bitflags-serde-legacy"
@@ -450,7 +450,7 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dfecf9fa72400de980120c09d7027140daa6541292245ff61a4ad3b89771680e"
 dependencies = [
- "bitflags 2.1.0",
+ "bitflags 2.2.1",
  "serde",
 ]
 
@@ -5902,7 +5902,7 @@ dependencies = [
 name = "zebra-chain"
 version = "1.0.0-beta.23"
 dependencies = [
- "bitflags 2.1.0",
+ "bitflags 2.2.1",
  "bitflags-serde-legacy",
  "bitvec",
  "blake2b_simd",
@@ -6012,7 +6012,7 @@ dependencies = [
 name = "zebra-network"
 version = "1.0.0-beta.23"
 dependencies = [
- "bitflags 2.1.0",
+ "bitflags 2.2.1",
  "byteorder",
  "bytes",
  "chrono",
diff --git a/zebra-chain/Cargo.toml b/zebra-chain/Cargo.toml
index 324fda80..8b3c85de 100644
--- a/zebra-chain/Cargo.toml
+++ b/zebra-chain/Cargo.toml
@@ -34,7 +34,7 @@ bench = ["zebra-test"]
 
 # Cryptography
 bitvec = "1.0.1"
-bitflags = "2.1.0"
+bitflags = "2.2.1"
 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 148d74ee..a1abd7dd 100644
--- a/zebra-network/Cargo.toml
+++ b/zebra-network/Cargo.toml
@@ -23,7 +23,7 @@ progress-bar = [
 proptest-impl = ["proptest", "proptest-derive", "zebra-chain/proptest-impl"]
 
 [dependencies]
-bitflags = "2.1.0"
+bitflags = "2.2.1"
 byteorder = "1.4.3"
 bytes = "1.4.0"
 chrono = { version = "0.4.24", default-features = false, features = ["clock", "std"] }