diff --git a/Cargo.lock b/Cargo.lock
index c2bdbb35c..21bc47d6c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3423,14 +3423,14 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.9.3"
+version = "1.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81bc1d4caf89fac26a70747fe603c130093b53c773888797a6329091246d651a"
+checksum = "12de2eff854e5fa4b1295edd650e227e9d8fb0c9e90b12e7f36d6a6811791a29"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-automata 0.3.6",
- "regex-syntax 0.7.4",
+ "regex-automata 0.3.7",
+ "regex-syntax 0.7.5",
 ]
 
 [[package]]
@@ -3444,13 +3444,13 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.3.6"
+version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fed1ceff11a1dddaee50c9dc8e4938bd106e9d89ae372f192311e7da498e3b69"
+checksum = "49530408a136e16e5b486e883fbb6ba058e8e4e8ae6621a77b048b314336e629"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-syntax 0.7.4",
+ "regex-syntax 0.7.5",
 ]
 
 [[package]]
@@ -3461,9 +3461,9 @@ checksum = "f162c6dd7b008981e4d40210aca20b4bd0f9b60ca9271061b07f78537722f2e1"
 
 [[package]]
 name = "regex-syntax"
-version = "0.7.4"
+version = "0.7.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e5ea92a5b6195c6ef2a0295ea818b312502c6fc94dde986c5553242e18fd4ce2"
+checksum = "dbb5fb1acd8a1a18b3dd5be62d25485eb770e05afb408a9627d14d451bae12da"
 
 [[package]]
 name = "reqwest"
@@ -3861,9 +3861,9 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.185"
+version = "1.0.188"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "be9b6f69f1dfd54c3b568ffa45c310d6973a5e5148fd40cf515acaf38cf5bc31"
+checksum = "cf9e0fcba69a370eed61bcf2b728575f726b50b55cba78064753d708ddc7549e"
 dependencies = [
  "serde_derive",
 ]
@@ -3879,9 +3879,9 @@ dependencies = [
 
 [[package]]
 name = "serde_derive"
-version = "1.0.185"
+version = "1.0.188"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc59dfdcbad1437773485e0367fea4b090a2e0a16d9ffc46af47764536a298ec"
+checksum = "4eca7ac642d82aa35b60049a6eccb4be6be75e599bd2e9adb5f875a737654af2"
 dependencies = [
  "proc-macro2 1.0.66",
  "quote 1.0.31",
diff --git a/zebra-chain/Cargo.toml b/zebra-chain/Cargo.toml
index 05fc4bb26..62d3a58cb 100644
--- a/zebra-chain/Cargo.toml
+++ b/zebra-chain/Cargo.toml
@@ -96,7 +96,7 @@ tracing = "0.1.37"
 
 # Serialization
 hex = { version = "0.4.3", features = ["serde"] }
-serde = { version = "1.0.185", features = ["serde_derive", "rc"] }
+serde = { version = "1.0.188", features = ["serde_derive", "rc"] }
 serde_with = "3.3.0"
 serde-big-array = "0.5.1"
 
diff --git a/zebra-consensus/Cargo.toml b/zebra-consensus/Cargo.toml
index dbf8ac6bd..22b0c0b1b 100644
--- a/zebra-consensus/Cargo.toml
+++ b/zebra-consensus/Cargo.toml
@@ -47,7 +47,7 @@ chrono = { version = "0.4.26", default-features = false, features = ["clock", "s
 displaydoc = "0.2.4"
 lazy_static = "1.4.0"
 once_cell = "1.18.0"
-serde = { version = "1.0.185", features = ["serde_derive"] }
+serde = { version = "1.0.188", features = ["serde_derive"] }
 
 futures = "0.3.28"
 futures-util = "0.3.28"
diff --git a/zebra-network/Cargo.toml b/zebra-network/Cargo.toml
index 4e09a3a68..7a9b3f7f7 100644
--- a/zebra-network/Cargo.toml
+++ b/zebra-network/Cargo.toml
@@ -55,8 +55,8 @@ ordered-map = "0.4.2"
 pin-project = "1.1.3"
 rand = "0.8.5"
 rayon = "1.7.0"
-regex = "1.9.3"
-serde = { version = "1.0.185", features = ["serde_derive"] }
+regex = "1.9.4"
+serde = { version = "1.0.188", features = ["serde_derive"] }
 tempfile = "3.8.0"
 thiserror = "1.0.47"
 
diff --git a/zebra-node-services/Cargo.toml b/zebra-node-services/Cargo.toml
index 037dfd59f..a52ecad84 100644
--- a/zebra-node-services/Cargo.toml
+++ b/zebra-node-services/Cargo.toml
@@ -44,7 +44,7 @@ color-eyre = { version = "0.6.2", optional = true }
 jsonrpc-core = { version = "18.0.0", optional = true }
 # Security: avoid default dependency on openssl
 reqwest = { version = "0.11.19", default-features = false, features = ["rustls-tls"], optional = true }
-serde = { version = "1.0.185", optional = true }
+serde = { version = "1.0.188", optional = true }
 serde_json = { version = "1.0.105", optional = true }
 
 [dev-dependencies]
@@ -52,5 +52,5 @@ serde_json = { version = "1.0.105", optional = true }
 color-eyre = "0.6.2"
 jsonrpc-core = "18.0.0"
 reqwest = { version = "0.11.19", default-features = false, features = ["rustls-tls"] }
-serde = "1.0.185"
+serde = "1.0.188"
 serde_json = "1.0.105"
diff --git a/zebra-rpc/Cargo.toml b/zebra-rpc/Cargo.toml
index a4cc0002d..54c4a6f62 100644
--- a/zebra-rpc/Cargo.toml
+++ b/zebra-rpc/Cargo.toml
@@ -60,7 +60,7 @@ tower = "0.4.13"
 tracing = "0.1.37"
 
 hex = { version = "0.4.3", features = ["serde"] }
-serde = { version = "1.0.185", features = ["serde_derive"] }
+serde = { version = "1.0.188", features = ["serde_derive"] }
 
 # Experimental feature getblocktemplate-rpcs
 rand = { version = "0.8.5", optional = true }
diff --git a/zebra-state/Cargo.toml b/zebra-state/Cargo.toml
index 2d8be8d4d..5447ac83c 100644
--- a/zebra-state/Cargo.toml
+++ b/zebra-state/Cargo.toml
@@ -53,11 +53,11 @@ itertools = "0.11.0"
 lazy_static = "1.4.0"
 metrics = "0.21.1"
 mset = "0.1.1"
-regex = "1.9.3"
+regex = "1.9.4"
 rlimit = "0.10.1"
 rocksdb = { version = "0.21.0", default-features = false, features = ["lz4"] }
 semver = "1.0.18"
-serde = { version = "1.0.185", features = ["serde_derive"] }
+serde = { version = "1.0.188", features = ["serde_derive"] }
 tempfile = "3.8.0"
 thiserror = "1.0.47"
 
diff --git a/zebra-test/Cargo.toml b/zebra-test/Cargo.toml
index fc4c9e4d5..d2e5aff1b 100644
--- a/zebra-test/Cargo.toml
+++ b/zebra-test/Cargo.toml
@@ -22,7 +22,7 @@ insta = "1.31.0"
 proptest = "1.2.0"
 once_cell = "1.18.0"
 rand = "0.8.5"
-regex = "1.9.3"
+regex = "1.9.4"
 
 tokio = { version = "1.32.0", features = ["full", "tracing", "test-util"] }
 tower = { version = "0.4.13", features = ["util"] }
diff --git a/zebra-utils/Cargo.toml b/zebra-utils/Cargo.toml
index fd03157ea..a3a939c5a 100644
--- a/zebra-utils/Cargo.toml
+++ b/zebra-utils/Cargo.toml
@@ -84,7 +84,7 @@ zebra-rpc = { path = "../zebra-rpc", version = "1.0.0-beta.28", optional = true
 itertools = { version = "0.11.0", optional = true }
 
 # These crates are needed for the search-issue-refs binary
-regex = { version = "1.9.3", optional = true }
+regex = { version = "1.9.4", optional = true }
 # Avoid default openssl dependency to reduce the dependency tree and security alerts. 
 reqwest = { version = "0.11.19", default-features = false, features = ["rustls-tls"], optional = true }
 
diff --git a/zebrad/Cargo.toml b/zebrad/Cargo.toml
index f5e990ead..6e9cc2dec 100644
--- a/zebrad/Cargo.toml
+++ b/zebrad/Cargo.toml
@@ -159,7 +159,7 @@ humantime-serde = "1.1.1"
 indexmap = "2.0.0"
 lazy_static = "1.4.0"
 semver = "1.0.18"
-serde = { version = "1.0.185", features = ["serde_derive"] }
+serde = { version = "1.0.188", features = ["serde_derive"] }
 toml = "0.7.6"
 
 futures = "0.3.28"
@@ -233,7 +233,7 @@ abscissa_core = { version = "0.7.0", features = ["testing"] }
 hex = "0.4.3"
 jsonrpc-core = "18.0.0"
 once_cell = "1.18.0"
-regex = "1.9.3"
+regex = "1.9.4"
 
 # zebra-rpc needs the preserve_order feature, it also makes test results more stable
 serde_json = { version = "1.0.105", features = ["preserve_order"] }