diff --git a/Cargo.lock b/Cargo.lock
index 1945d11..3d65520 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -100,9 +100,9 @@ checksum = "f93e7192158dbcda357bdec5fb5788eebf8bbac027f3f33e719d29135ae84156"
 
 [[package]]
 name = "indexmap"
-version = "2.1.0"
+version = "2.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d530e1a18b1cb4c484e6e34556a0d948706958449fca0cab753d649f2bce3d1f"
+checksum = "433de089bd45971eecf4668ee0ee8f4cec17db4f8bd8f7bc3197a6ce37aa7d9b"
 dependencies = [
  "equivalent",
  "hashbrown",
diff --git a/Cargo.toml b/Cargo.toml
index 405695a..dd29b5e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,7 +26,7 @@ peg = "0.8.2"
 permutation = "0.4.1"
 string-intern = { version ="0.1.7", default-features = false }
 log = "0.4"
-indexmap = "2.1.0"
+indexmap = "2.2.1"
 
 [dev-dependencies]
 collect-mac = "0.1.0"