diff --git a/Cargo.lock b/Cargo.lock
index 89c302034..c721b3ffe 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -466,9 +466,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.8.0"
+version = "2.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3954d50fe15b02142bf25d3b8bdadb634ec3948f103d04ffe3031bc8fe9d7058"
+checksum = "cea70ddb795996207ad57735b50c5982d8844f38ba9ee5f1aedcfb708a2aa11e"
 dependencies = [
  "equivalent",
  "hashbrown",
diff --git a/Cargo.toml b/Cargo.toml
index 150c46b9c..3b43a97ea 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,5 +27,5 @@ chrono = "0.4"
 clap = {version = "4.5.35", features = ["cargo", "derive"]}
 include_dir = "0.7.4"
 highs = "1.8.0"
-indexmap = "2.8.0"
+indexmap = "2.9.0"
 human-panic = "2.0.2"