diff --git a/Cargo.lock b/Cargo.lock
index 7478e742e9..758d85e982 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3478,9 +3478,9 @@ checksum = "e8a5a9a0ff0086c7a148acb942baaabeadf9504d10400b5a05645853729b9cd2"
 
 [[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",
diff --git a/Cargo.toml b/Cargo.toml
index c7261e5f99..6014d26c9d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -103,7 +103,7 @@ generic-array = "=0.14.9" # see https://github.com/RustCrypto/traits/issues/2036
 hex = "=0.4.3"
 http = "=1.3.1"
 hyper = { version = "=1.7.0", features = ["client", "http1"] }
-indexmap = { version = "=2.11.4", features = ["serde"] }
+indexmap = { version = "=2.12.0", features = ["serde"] }
 indicatif = "=0.18.0"
 ipnetwork = "=0.21.1"
 json-subscriber = "=0.2.6"
diff --git a/crates/crates_io_api_types/Cargo.toml b/crates/crates_io_api_types/Cargo.toml
index a5bb101c84..2adf64fea4 100644
--- a/crates/crates_io_api_types/Cargo.toml
+++ b/crates/crates_io_api_types/Cargo.toml
@@ -12,7 +12,7 @@ workspace = true
 [dependencies]
 chrono = { version = "=0.4.42", default-features = false, features = ["serde"] }
 crates_io_database = { path = "../crates_io_database" }
-indexmap = { version = "=2.11.4", features = ["serde"] }
+indexmap = { version = "=2.12.0", features = ["serde"] }
 semver = { version = "=1.0.27", features = ["serde"] }
 sentry-core = "=0.45.0"
 serde = { version = "=1.0.228", features = ["derive"] }