diff --git a/Cargo.lock b/Cargo.lock
index 92dd15044a2..b4787aaee59 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1709,7 +1709,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "edd72493923899c6f10c641bdbdeddc7183d6396641d99c1a0d1597f37f92e28"
 dependencies = [
  "cfg-if 1.0.0",
- "hashbrown 0.14.0",
+ "hashbrown 0.14.2",
  "lock_api",
  "once_cell",
  "parking_lot_core 0.9.8",
@@ -2146,7 +2146,7 @@ dependencies = [
  "hostname",
  "http",
  "hyper",
- "indexmap 2.0.0",
+ "indexmap 2.1.0",
  "multer",
  "openapiv3",
  "paste",
@@ -2965,9 +2965,9 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.14.0"
+version = "0.14.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c6201b9ff9fd90a5a3bac2e56a830d0caa509576f0e503818ee82c181b3437a"
+checksum = "f93e7192158dbcda357bdec5fb5788eebf8bbac027f3f33e719d29135ae84156"
 dependencies = [
  "ahash",
  "allocator-api2",
@@ -2979,7 +2979,7 @@ version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "312f66718a2d7789ffef4f4b7b213138ed9f1eb3aa1d0d82fc99f88fb3ffd26f"
 dependencies = [
- "hashbrown 0.14.0",
+ "hashbrown 0.14.2",
 ]
 
 [[package]]
@@ -3429,13 +3429,12 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.0.0"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d5477fe2230a79769d8dc68e0eabf5437907c0457a5614a9e8dddb67f65eb65d"
+checksum = "d530e1a18b1cb4c484e6e34556a0d948706958449fca0cab753d649f2bce3d1f"
 dependencies = [
  "equivalent",
- "hashbrown 0.14.0",
- "serde",
+ "hashbrown 0.14.2",
 ]
 
 [[package]]
@@ -5437,11 +5436,11 @@ dependencies = [
  "generic-array",
  "getrandom 0.2.10",
  "hashbrown 0.13.2",
- "hashbrown 0.14.0",
+ "hashbrown 0.14.2",
  "hex",
  "hyper",
  "hyper-rustls",
- "indexmap 2.0.0",
+ "indexmap 1.9.3",
  "inout",
  "ipnetwork",
  "itertools 0.10.5",
@@ -5551,7 +5550,7 @@ version = "0.4.0"
 source = "git+https://github.com/oxidecomputer/openapi-lint?branch=main#bb69a3a4a184d966bac2a0df2be5c9038d9867d0"
 dependencies = [
  "heck 0.4.1",
- "indexmap 2.0.0",
+ "indexmap 2.1.0",
  "lazy_static",
  "openapiv3",
  "regex",
@@ -5563,7 +5562,7 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "75e56d5c441965b6425165b7e3223cc933ca469834f4a8b4786817a1f9dc4f13"
 dependencies = [
- "indexmap 2.0.0",
+ "indexmap 1.9.3",
  "serde",
  "serde_json",
 ]
@@ -6208,7 +6207,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e1d3afd2628e69da2be385eb6f2fd57c8ac7977ceeff6dc166ff1657b0e386a9"
 dependencies = [
  "fixedbitset",
- "indexmap 2.0.0",
+ "indexmap 2.1.0",
  "serde",
  "serde_derive",
 ]
@@ -6600,7 +6599,7 @@ dependencies = [
  "getopts",
  "heck 0.4.1",
  "http",
- "indexmap 2.0.0",
+ "indexmap 2.1.0",
  "openapiv3",
  "proc-macro2",
  "quote",
@@ -7978,7 +7977,7 @@ version = "0.9.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1a49e178e4452f45cb61d0cd8cebc1b0fafd3e41929e996cef79aa3aca91f574"
 dependencies = [
- "indexmap 2.0.0",
+ "indexmap 2.1.0",
  "itoa",
  "ryu",
  "serde",
@@ -9217,7 +9216,7 @@ version = "0.19.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1b5bb770da30e5cbfde35a2d7b9b8a2c4b8ef89548a7a6aeab5c9a576e3e7421"
 dependencies = [
- "indexmap 2.0.0",
+ "indexmap 2.1.0",
  "serde",
  "serde_spanned",
  "toml_datetime",
@@ -9230,7 +9229,7 @@ version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ff63e60a958cefbb518ae1fd6566af80d9d4be430a33f3723dfc47d1d411d95"
 dependencies = [
- "indexmap 2.0.0",
+ "indexmap 2.1.0",
  "serde",
  "serde_spanned",
  "toml_datetime",
@@ -9703,7 +9702,7 @@ dependencies = [
  "derive-where",
  "either",
  "futures",
- "indexmap 2.0.0",
+ "indexmap 2.1.0",
  "indicatif",
  "linear-map",
  "omicron-test-utils",
@@ -10079,7 +10078,7 @@ dependencies = [
  "futures",
  "hex",
  "humantime",
- "indexmap 2.0.0",
+ "indexmap 2.1.0",
  "indicatif",
  "itertools 0.11.0",
  "omicron-common 0.1.0",
diff --git a/Cargo.toml b/Cargo.toml
index ab56e052e7e..3a26a59f779 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -213,7 +213,7 @@ hyper = "0.14"
 hyper-rustls = "0.24.2"
 hyper-staticfile = "0.9.5"
 illumos-utils = { path = "illumos-utils" }
-indexmap = "2.0.0"
+indexmap = "2.1.0"
 indicatif = { version = "0.17.7", features = ["rayon"] }
 installinator = { path = "installinator" }
 installinator-artifactd = { path = "installinator-artifactd" }
diff --git a/workspace-hack/Cargo.toml b/workspace-hack/Cargo.toml
index 72854ed29ad..2860c4450e1 100644
--- a/workspace-hack/Cargo.toml
+++ b/workspace-hack/Cargo.toml
@@ -46,11 +46,11 @@ futures-util = { version = "0.3.29", features = ["channel", "io", "sink"] }
 gateway-messages = { git = "https://github.com/oxidecomputer/management-gateway-service", rev = "2739c18e80697aa6bc235c935176d14b4d757ee9", features = ["std"] }
 generic-array = { version = "0.14.7", default-features = false, features = ["more_lengths", "zeroize"] }
 getrandom = { version = "0.2.10", default-features = false, features = ["js", "rdrand", "std"] }
-hashbrown-582f2526e08bb6a0 = { package = "hashbrown", version = "0.14.0", features = ["raw"] }
+hashbrown-582f2526e08bb6a0 = { package = "hashbrown", version = "0.14.2", features = ["raw"] }
 hashbrown-594e8ee84c453af0 = { package = "hashbrown", version = "0.13.2" }
 hex = { version = "0.4.3", features = ["serde"] }
 hyper = { version = "0.14.27", features = ["full"] }
-indexmap = { version = "2.0.0", features = ["serde"] }
+indexmap = { version = "1.9.3", default-features = false, features = ["serde", "std"] }
 inout = { version = "0.1.3", default-features = false, features = ["std"] }
 ipnetwork = { version = "0.20.0", features = ["schemars"] }
 itertools = { version = "0.10.5" }
@@ -138,11 +138,11 @@ futures-util = { version = "0.3.29", features = ["channel", "io", "sink"] }
 gateway-messages = { git = "https://github.com/oxidecomputer/management-gateway-service", rev = "2739c18e80697aa6bc235c935176d14b4d757ee9", features = ["std"] }
 generic-array = { version = "0.14.7", default-features = false, features = ["more_lengths", "zeroize"] }
 getrandom = { version = "0.2.10", default-features = false, features = ["js", "rdrand", "std"] }
-hashbrown-582f2526e08bb6a0 = { package = "hashbrown", version = "0.14.0", features = ["raw"] }
+hashbrown-582f2526e08bb6a0 = { package = "hashbrown", version = "0.14.2", features = ["raw"] }
 hashbrown-594e8ee84c453af0 = { package = "hashbrown", version = "0.13.2" }
 hex = { version = "0.4.3", features = ["serde"] }
 hyper = { version = "0.14.27", features = ["full"] }
-indexmap = { version = "2.0.0", features = ["serde"] }
+indexmap = { version = "1.9.3", default-features = false, features = ["serde", "std"] }
 inout = { version = "0.1.3", default-features = false, features = ["std"] }
 ipnetwork = { version = "0.20.0", features = ["schemars"] }
 itertools = { version = "0.10.5" }