diff --git a/crates/parry2d-f64/Cargo.toml b/crates/parry2d-f64/Cargo.toml
index 6f827061..d385dfb9 100644
--- a/crates/parry2d-f64/Cargo.toml
+++ b/crates/parry2d-f64/Cargo.toml
@@ -54,7 +54,7 @@ approx          = { version = "0.5", default-features = false }
 serde           = { version = "1.0", optional = true, features = ["derive"] }
 rkyv            = { version = "0.7.41", optional = true }
 num-derive      = "0.4"
-indexmap        = { version = "1", features = [ "serde-1" ], optional = true }
+indexmap        = { version = "2", features = [ "serde" ], optional = true }
 rustc-hash      = { version = "1", optional = true }
 cust_core       = { version = "0.1", optional = true }
 spade           = { version = "2", optional = true } # Make this optional?
diff --git a/crates/parry2d/Cargo.toml b/crates/parry2d/Cargo.toml
index 119ef4d5..ca570cd7 100644
--- a/crates/parry2d/Cargo.toml
+++ b/crates/parry2d/Cargo.toml
@@ -54,7 +54,7 @@ approx          = { version = "0.5", default-features = false }
 serde           = { version = "1.0", optional = true, features = ["derive"] }
 rkyv            = { version = "0.7.41", optional = true }
 num-derive      = "0.4"
-indexmap        = { version = "1", features = [ "serde-1" ], optional = true }
+indexmap        = { version = "2", features = [ "serde" ], optional = true }
 rustc-hash      = { version = "1", optional = true }
 cust_core       = { version = "0.1", optional = true }
 spade           = { version = "2", optional = true }
diff --git a/crates/parry3d-f64/Cargo.toml b/crates/parry3d-f64/Cargo.toml
index f41ce9b7..704fa5ad 100644
--- a/crates/parry3d-f64/Cargo.toml
+++ b/crates/parry3d-f64/Cargo.toml
@@ -54,7 +54,7 @@ approx     = { version = "0.5", default-features = false }
 serde      = { version = "1.0", optional = true, features = ["derive", "rc"]}
 rkyv       = { version = "0.7.41", optional = true }
 num-derive = "0.4"
-indexmap   = { version = "1", features = [ "serde-1" ], optional = true }
+indexmap   = { version = "2", features = [ "serde" ], optional = true }
 rustc-hash = { version = "1", optional = true }
 cust_core  = { version = "0.1", optional = true }
 spade      = { version = "2", optional = true } # Make this optional?
diff --git a/crates/parry3d/Cargo.toml b/crates/parry3d/Cargo.toml
index b074ebb8..3b08602a 100644
--- a/crates/parry3d/Cargo.toml
+++ b/crates/parry3d/Cargo.toml
@@ -55,7 +55,7 @@ approx     = { version = "0.5", default-features = false }
 serde      = { version = "1.0", optional = true, features = ["derive", "rc"]}
 rkyv       = { version = "0.7.41", optional = true }
 num-derive = "0.4"
-indexmap   = { version = "1", features = [ "serde-1" ], optional = true }
+indexmap   = { version = "2", features = [ "serde" ], optional = true }
 rustc-hash = { version = "1", optional = true }
 cust_core  = { version = "0.1", optional = true }
 spade      = { version = "2", optional = true } # Make this optional?