diff --git a/src/rust/engine/Cargo.lock b/src/rust/engine/Cargo.lock
index 18ac14f27f3..7084566e99f 100644
--- a/src/rust/engine/Cargo.lock
+++ b/src/rust/engine/Cargo.lock
@@ -364,7 +364,7 @@ name = "codegen"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "indexmap 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -616,7 +616,7 @@ name = "double-checked-cell-async"
 version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "futures-util 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -662,7 +662,7 @@ dependencies = [
  "futures 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "graph 0.0.1",
  "hashing 0.0.1",
- "indexmap 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1062,7 +1062,7 @@ dependencies = [
  "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.1.21 (registry+https://github.com/rust-lang/crates.io-index)",
- "indexmap 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.4.0 (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)",
@@ -1080,7 +1080,7 @@ dependencies = [
  "futures-sink 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "http 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "indexmap 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.4.0 (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 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1232,7 +1232,7 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.3.2"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2767,7 +2767,7 @@ dependencies = [
  "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "grpcio 0.5.1 (git+https://github.com/pantsbuild/grpc-rs.git?rev=ed3afa3c24ddf1fdd86826e836f57c00757dfc00)",
  "hashing 0.0.1",
- "indexmap 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "lmdb 0.8.0 (git+https://github.com/pantsbuild/lmdb-rs.git?rev=06bdfbfc6348f6804127176e561843f214fc17f8)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3187,7 +3187,7 @@ version = "0.0.1"
 dependencies = [
  "futures 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "indexmap 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "indexmap 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "indicatif 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "logging 0.0.1",
  "num_cpus 1.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3646,7 +3646,7 @@ dependencies = [
 "checksum hyper-rustls 0.20.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac965ea399ec3a25ac7d13b8affd4b8f39325cca00858ddf5eb29b79e6b14b08"
 "checksum idna 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "02e2673c30ee86b5b96a9cb52ad15718aa1f966f5ab9ad54a8b95d5ca33120a9"
 "checksum ignore 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)" = "7c81b30e645a7b49ad57340fd900717e6b3404bfe8322035ef189d434c412aa1"
-"checksum indexmap 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "076f042c5b7b98f31d205f1249267e12a6518c1481e9dae9764af19b707d2292"
+"checksum indexmap 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c398b2b113b55809ceb9ee3e753fcbac793f1956663f3c36549c1346015c2afe"
 "checksum indicatif 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)" = "49a68371cf417889c9d7f98235b7102ea7c54fc59bcbd22f3dea785be9d27e40"
 "checksum inotify 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)" = "bc39ee997811267bf8aa0b10e1674c5bea6caacc1957eede5ea45251fe33c6d5"
 "checksum inotify-sys 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e74a1aa87c59aeff6ef2cc2fa62d41bc43f54952f55652656b18a02fd5e356c0"
diff --git a/src/rust/engine/Cargo.toml b/src/rust/engine/Cargo.toml
index 1014ab4d086..949b5cf273e 100644
--- a/src/rust/engine/Cargo.toml
+++ b/src/rust/engine/Cargo.toml
@@ -108,7 +108,7 @@ futures01 = { package = "futures", version = "0.1" }
 futures = { version = "0.3", features = ["compat"] }
 graph = { path = "graph" }
 hashing = { path = "hashing" }
-indexmap = "1.0.2"
+indexmap = "1.4"
 itertools = "0.8.2"
 lazy_static = "1"
 log = "0.4"
diff --git a/src/rust/engine/fs/store/Cargo.toml b/src/rust/engine/fs/store/Cargo.toml
index 2954621453f..aff2dea4028 100644
--- a/src/rust/engine/fs/store/Cargo.toml
+++ b/src/rust/engine/fs/store/Cargo.toml
@@ -18,7 +18,7 @@ glob = "0.2.11"
 # TODO: This is 0.5.1 + https://github.com/tikv/grpc-rs/pull/457 + a workaround for https://github.com/rust-lang/cargo/issues/8258
 grpcio = { git = "https://github.com/pantsbuild/grpc-rs.git", rev = "ed3afa3c24ddf1fdd86826e836f57c00757dfc00", default_features = false, features = ["protobuf-codec", "secure"] }
 hashing = { path = "../../hashing" }
-indexmap = "1.0.2"
+indexmap = "1.4"
 itertools = "0.7.2"
 lmdb = { git = "https://github.com/pantsbuild/lmdb-rs.git", rev = "06bdfbfc6348f6804127176e561843f214fc17f8" }
 log = "0.4"
diff --git a/src/rust/engine/ui/Cargo.toml b/src/rust/engine/ui/Cargo.toml
index 48574bb1a24..04b4990d7ec 100644
--- a/src/rust/engine/ui/Cargo.toml
+++ b/src/rust/engine/ui/Cargo.toml
@@ -11,7 +11,7 @@ path = "src/console_ui.rs"
 indicatif = "0.14.0"
 futures01 = { package = "futures", version = "0.1" }
 futures = { version = "0.3", features = ["compat"] }
-indexmap = "1.0.2"
+indexmap = "1.4"
 uuid = { version = "0.7", features = ["v4"] }
 logging = { path = "../logging" }
 task_executor = { path = "../task_executor" }