diff --git a/Cargo.lock b/Cargo.lock
index 01d280bf..dd3dd3bb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2068,9 +2068,9 @@ checksum = "ce23b50ad8242c51a442f3ff322d56b02f08852c77e4c0b4d3fd684abc89c683"
 
 [[package]]
 name = "indexmap"
-version = "1.9.2"
+version = "1.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1885e79c1fc4b10f0e172c475f458b7f7b93061064d98c3293e98c5ba0c8b399"
+checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
 dependencies = [
  "autocfg",
  "hashbrown",
diff --git a/zebra-network/Cargo.toml b/zebra-network/Cargo.toml
index 8aaa6f0d..48da9acc 100644
--- a/zebra-network/Cargo.toml
+++ b/zebra-network/Cargo.toml
@@ -20,7 +20,7 @@ bytes = "1.4.0"
 chrono = { version = "0.4.24", default-features = false, features = ["clock", "std"] }
 hex = "0.4.3"
 humantime-serde = "1.1.1"
-indexmap = { version = "1.9.2", features = ["serde"] }
+indexmap = { version = "1.9.3", features = ["serde"] }
 lazy_static = "1.4.0"
 ordered-map = "0.4.2"
 pin-project = "1.0.12"
diff --git a/zebra-rpc/Cargo.toml b/zebra-rpc/Cargo.toml
index 66491697..63fd529d 100644
--- a/zebra-rpc/Cargo.toml
+++ b/zebra-rpc/Cargo.toml
@@ -45,7 +45,7 @@ num_cpus = "1.15.0"
 
 # zebra-rpc needs the preserve_order feature in serde_json, which is a dependency of jsonrpc-core
 serde_json = { version = "1.0.94", features = ["preserve_order"] }
-indexmap = { version = "1.9.2", features = ["serde"] }
+indexmap = { version = "1.9.3", features = ["serde"] }
 
 tokio = { version = "1.26.0", features = ["time", "rt-multi-thread", "macros", "tracing"] }
 tower = "0.4.13"
diff --git a/zebra-state/Cargo.toml b/zebra-state/Cargo.toml
index b2c3f32c..fb6360b4 100644
--- a/zebra-state/Cargo.toml
+++ b/zebra-state/Cargo.toml
@@ -34,7 +34,7 @@ chrono = { version = "0.4.24", default-features = false, features = ["clock", "s
 dirs = "5.0.0"
 futures = "0.3.27"
 hex = "0.4.3"
-indexmap = "1.9.2"
+indexmap = "1.9.3"
 itertools = "0.10.5"
 lazy_static = "1.4.0"
 metrics = "0.20.1"
diff --git a/zebra-test/Cargo.toml b/zebra-test/Cargo.toml
index 1cd19647..fd4ce19c 100644
--- a/zebra-test/Cargo.toml
+++ b/zebra-test/Cargo.toml
@@ -9,7 +9,7 @@ edition = "2021"
 
 [dependencies]
 hex = "0.4.3"
-indexmap = "1.9.2"
+indexmap = "1.9.3"
 lazy_static = "1.4.0"
 insta = "1.29.0"
 proptest = "0.10.1"
diff --git a/zebrad/Cargo.toml b/zebrad/Cargo.toml
index 2d6faff9..21121cae 100644
--- a/zebrad/Cargo.toml
+++ b/zebrad/Cargo.toml
@@ -106,7 +106,7 @@ abscissa_core = "0.5"
 gumdrop = { version = "0.7", features = ["default_expr"]}
 chrono = { version = "0.4.24", default-features = false, features = ["clock", "std"] }
 humantime-serde = "1.1.1"
-indexmap = "1.9.2"
+indexmap = "1.9.3"
 lazy_static = "1.4.0"
 serde = { version = "1.0.158", features = ["serde_derive"] }
 toml = "0.7.3"