diff --git a/Cargo.lock b/Cargo.lock
index b0d45e6..3991cac 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2193,6 +2193,12 @@ dependencies = [
  "cfg-if 1.0.0",
 ]
 
+[[package]]
+name = "intmap"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee87fd093563344074bacf24faa0bb0227fb6969fb223e922db798516de924d6"
+
 [[package]]
 name = "iovec"
 version = "0.1.4"
@@ -2516,6 +2522,7 @@ dependencies = [
  "criterion",
  "csv",
  "futures 0.3.30",
+ "intmap",
  "itertools 0.10.5",
  "jsonrpc-core 18.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core-client",
diff --git a/connector/Cargo.toml b/connector/Cargo.toml
index 91ad11e..fe4e26d 100644
--- a/connector/Cargo.toml
+++ b/connector/Cargo.toml
@@ -42,6 +42,7 @@ serde_derive = { workspace = true }
 log = { workspace = true }
 anyhow = { workspace = true }
 smallvec = "1.13.2"
+intmap = "2.0.0"
 
 itertools = { workspace = true }