diff --git a/Cargo.toml b/Cargo.toml
index cefc8652..abdad72c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -36,7 +36,7 @@ anyhow = { version = "1.0", optional = true }
 chrono = { version = "0.4", default-features = false, optional = true }
 eyre = { version = ">= 0.4, < 0.7", optional = true }
 hashbrown = { version = ">= 0.9, < 0.15", optional = true }
-indexmap = { version = "1.6", optional = true }
+indexmap = { version = ">= 1.6, < 3", optional = true }
 num-bigint = { version = "0.4", optional = true }
 num-complex = { version = ">= 0.2, < 0.5", optional = true }
 rust_decimal = { version = "1.0.0", default-features = false, optional = true }
diff --git a/newsfragments/3277.packaging.md b/newsfragments/3277.packaging.md
new file mode 100644
index 00000000..1fbed184
--- /dev/null
+++ b/newsfragments/3277.packaging.md
@@ -0,0 +1 @@
+Extended range of supported versions of `indexmap` optional dependency to include version 2.
diff --git a/noxfile.py b/noxfile.py
index bde39621..1493348b 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -472,6 +472,7 @@ def set_minimal_package_versions(session: nox.Session):
         "rayon-core": "1.10.2",
         "regex": "1.7.3",
         "proptest": "1.0.0",
+        "indexmap": "1.9.3",
     }
 
     # run cargo update first to ensure that everything is at highest