diff --git a/Cargo.lock b/Cargo.lock
index 4148d03a..d60b9016 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -166,9 +166,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.0.2"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8adf3ddd720272c6ea8bf59463c04e0f93d0bbf7c5439b691bca2987e0270897"
+checksum = "d530e1a18b1cb4c484e6e34556a0d948706958449fca0cab753d649f2bce3d1f"
 dependencies = [
  "equivalent",
  "hashbrown",
diff --git a/Cargo.toml b/Cargo.toml
index 21ad948b..4ee87094 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ html5ever = "0.26"
 selectors = "0.25.0"
 tendril = "0.4.3"
 ahash = "0.8"
-indexmap = { version = "2.0.2", optional = true }
+indexmap = { version = "2.1.0", optional = true }
 once_cell = "1.0"
 
 [dependencies.getopts]