diff --git a/Cargo.toml b/Cargo.toml
index 7d344f6..3a03999 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,7 @@ license = "EPL-2.0"
 anyhow = "1.0"
 camino = "1.1"
 clap = { version = "4.4", features = ["derive"] }
-indexmap = "1.9"
+indexmap = "2.2"
 rational = "1.5"
 serde = { version = "1.0.188", features = ["derive"] }
 serde_with = "3.4"