diff --git a/Cargo.lock b/Cargo.lock
index 55cc259b54e..6ed9ea30bd4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -555,7 +555,7 @@ version = "0.15.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "180e549344080374f9b32ed41bf3b6b57885ff6a289367b3dbc10eea8acc1918"
 dependencies = [
- "indexmap 2.11.4",
+ "indexmap 2.12.0",
  "pathdiff",
  "ron",
  "serde_core",
@@ -1284,7 +1284,7 @@ dependencies = [
  "debug-ignore",
  "fixedbitset",
  "guppy-workspace-hack",
- "indexmap 2.11.4",
+ "indexmap 2.12.0",
  "itertools",
  "nested",
  "once_cell",
@@ -1316,7 +1316,7 @@ dependencies = [
  "futures-core",
  "futures-sink",
  "http",
- "indexmap 2.11.4",
+ "indexmap 2.12.0",
  "slab",
  "tokio",
  "tokio-util",
@@ -1649,9 +1649,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.11.4"
+version = "2.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b0f83760fb341a774ed326568e19f5a863af4a952def8c39f9ab92fd95b88e5"
+checksum = "6717a8d2a5a929a1a2eb43a12812498ed141a0bcfb7e8f7844fbdbe4303bba9f"
 dependencies = [
  "equivalent",
  "hashbrown 0.16.0",
@@ -2080,7 +2080,7 @@ dependencies = [
  "humantime-serde",
  "iddqd",
  "indent_write",
- "indexmap 2.11.4",
+ "indexmap 2.12.0",
  "indicatif 0.18.0",
  "indoc",
  "insta",
@@ -2155,7 +2155,7 @@ dependencies = [
  "getrandom 0.3.3",
  "hashbrown 0.16.0",
  "idna_adapter",
- "indexmap 2.11.4",
+ "indexmap 2.12.0",
  "libc",
  "log",
  "memchr",
@@ -2359,7 +2359,7 @@ checksum = "54acf3a685220b533e437e264e4d932cfbdc4cc7ec0cd232ed73c08d03b8a7ca"
 dependencies = [
  "fixedbitset",
  "hashbrown 0.15.5",
- "indexmap 2.11.4",
+ "indexmap 2.12.0",
 ]
 
 [[package]]
@@ -2520,7 +2520,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3ed1a693391a16317257103ad06a88c6529ac640846021da7c435a06fffdacd7"
 dependencies = [
  "chrono",
- "indexmap 2.11.4",
+ "indexmap 2.12.0",
  "newtype-uuid",
  "quick-xml",
  "strip-ansi-escapes",
@@ -2788,7 +2788,7 @@ checksum = "b91f7eff05f748767f183df4320a63d6936e9c6107d97c9e6bdd9784f4289c94"
 dependencies = [
  "base64 0.21.7",
  "bitflags",
- "indexmap 2.11.4",
+ "indexmap 2.12.0",
  "serde",
  "serde_derive",
 ]
@@ -3036,7 +3036,7 @@ version = "1.0.145"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "402a6f66d8c709116cf22f558eab210f5a50187f702eb4d7e5ef38d9a7f1c79c"
 dependencies = [
- "indexmap 2.11.4",
+ "indexmap 2.12.0",
  "itoa",
  "memchr",
  "ryu",
@@ -3616,7 +3616,7 @@ version = "0.9.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0dc8b1fb61449e27716ec0e1bdf0f6b8f3e8f6b05391e8497b8b6d7804ea6d8"
 dependencies = [
- "indexmap 2.11.4",
+ "indexmap 2.12.0",
  "serde_core",
  "serde_spanned 1.0.3",
  "toml_datetime 0.7.3",
@@ -3649,7 +3649,7 @@ version = "0.22.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "41fe8c660ae4257887cf66394862d21dbca4a6ddd26f04a3560410406a2f819a"
 dependencies = [
- "indexmap 2.11.4",
+ "indexmap 2.12.0",
  "serde",
  "serde_spanned 0.6.9",
  "toml_datetime 0.6.11",
@@ -3663,7 +3663,7 @@ version = "0.23.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6485ef6d0d9b5d0ec17244ff7eb05310113c3f316f2d14200d4de56b3cb98f8d"
 dependencies = [
- "indexmap 2.11.4",
+ "indexmap 2.12.0",
  "serde_core",
  "serde_spanned 1.0.3",
  "toml_datetime 0.7.3",
diff --git a/Cargo.toml b/Cargo.toml
index 2bfafcf09ee..1c596d6b337 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -72,7 +72,7 @@ iddqd = "0.3.14"
 idna_adapter = "=1.0.0"
 indenter = "0.3.4"
 indent_write = "2.2.0"
-indexmap = "2.11.4"
+indexmap = "2.12.0"
 indicatif = "0.18.0"
 indoc = "2.0.6"
 insta = { version = "1.43.2", default-features = false }
diff --git a/workspace-hack/Cargo.toml b/workspace-hack/Cargo.toml
index be6643c185f..3d8a3fc8a0f 100644
--- a/workspace-hack/Cargo.toml
+++ b/workspace-hack/Cargo.toml
@@ -26,7 +26,7 @@ either = { version = "1.15.0", features = ["use_std"] }
 getrandom = { version = "0.3.3", default-features = false, features = ["std"] }
 hashbrown = { version = "0.16.0", default-features = false, features = ["allocator-api2", "inline-more"] }
 idna_adapter = { version = "1.0.0", default-features = false, features = ["compiled_data"] }
-indexmap = { version = "2.11.4", features = ["serde"] }
+indexmap = { version = "2.12.0", features = ["serde"] }
 log = { version = "0.4.28", default-features = false, features = ["std"] }
 memchr = { version = "2.7.5" }
 miette = { version = "7.6.0", features = ["fancy"] }