diff --git a/Cargo.lock b/Cargo.lock
index 0613b062..83c9b049 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1597,9 +1597,9 @@ checksum = "e0bd112d44d9d870a6819eb505d04dd92b5e4d94bb8c304924a0872ae7016fb5"
 
 [[package]]
 name = "indexmap"
-version = "1.7.0"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
+checksum = "282a6247722caba404c065016bbfa522806e51714c34f5dfc3e4a3a46fcb4223"
 dependencies = [
  "autocfg",
  "hashbrown",
diff --git a/zebrad/Cargo.toml b/zebrad/Cargo.toml
index 35e4ba7e..d1e81555 100644
--- a/zebrad/Cargo.toml
+++ b/zebrad/Cargo.toml
@@ -18,7 +18,7 @@ zebra-state = { path = "../zebra-state" }
 abscissa_core = "0.5"
 chrono = "0.4"
 gumdrop = "0.7"
-indexmap = "1.7.0"
+indexmap = "1.8.0"
 lazy_static = "1.4.0"
 serde = { version = "1", features = ["serde_derive"] }
 toml = "0.5"