diff --git a/Cargo.lock b/Cargo.lock
index 0b5c0a1a01..06a79c5c9a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -943,7 +943,7 @@ dependencies = [
  "env_logger 0.5.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "indexmap 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1326,7 +1326,7 @@ dependencies = [
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
- "indexmap 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "string 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1344,7 +1344,7 @@ dependencies = [
  "futures-sink 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-util 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "indexmap 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1589,8 +1589,11 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.1.0"
+version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "indicatif"
@@ -3736,7 +3739,7 @@ dependencies = [
  "crossbeam-channel 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "ed25519-dalek 1.0.0-pre.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "fs_extra 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "indexmap 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-derive 14.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -4130,7 +4133,7 @@ version = "0.23.0"
 dependencies = [
  "bincode 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "indexmap 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -6149,7 +6152,7 @@ dependencies = [
 "checksum hyper-rustls 0.19.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b89109920197f2c90d75e82addbb96bf424570790d310cc2b18f0b33f4a9cc43"
 "checksum idna 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "38f09e0f0b1fb55fdee1f17470ad800da77af5186a1a76c026b679358b7e844e"
 "checksum idna 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "02e2673c30ee86b5b96a9cb52ad15718aa1f966f5ab9ad54a8b95d5ca33120a9"
-"checksum indexmap 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a4d6d89e0948bf10c08b9ecc8ac5b83f07f857ebe2c0cbe38de15b4e4f510356"
+"checksum indexmap 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0b54058f0a6ff80b6803da8faf8997cde53872b38f4023728f6830b06cd3c0dc"
 "checksum indicatif 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8572bccfb0665e70b7faf44ee28841b8e0823450cd4ad562a76b5a3c4bf48487"
 "checksum iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b2b3ea6ff95e175473f8ffe6a7eb7c00d054240321b84c57051175fe3c1e075e"
 "checksum itertools 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)" = "0d47946d458e94a1b7bcabbf6521ea7c037062c81f534615abcad76e84d4970d"
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 86c3701364..320e939d80 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -22,7 +22,7 @@ core_affinity = "0.5.10"
 crc = { version = "1.8.1", optional = true }
 crossbeam-channel = "0.3"
 fs_extra = "1.1.0"
-indexmap = "1.1"
+indexmap = "1.3"
 itertools = "0.8.2"
 jsonrpc-core = "14.0.5"
 jsonrpc-derive = "14.0.5"