diff --git a/Cargo.lock b/Cargo.lock
index 9363eb707d3c..0282a7b093a0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5655,10 +5655,11 @@ dependencies = [
 
 [[package]]
 name = "rust_decimal"
-version = "1.8.1"
+version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9e81662973c7a8d9663e64a0de4cd642b89a21d64966e3d99606efdc5fb0cc6"
+checksum = "71b5a9625a7e6060b23db692facf49082cc78889a7e6ac94a735356ae49db4b0"
 dependencies = [
+ "arrayvec",
  "num-traits",
  "serde",
 ]
diff --git a/testsuite/cli/Cargo.toml b/testsuite/cli/Cargo.toml
index c2bfa3d81866..8f9c32b1e9c4 100644
--- a/testsuite/cli/Cargo.toml
+++ b/testsuite/cli/Cargo.toml
@@ -15,7 +15,7 @@ chrono = "0.4.19"
 hex = "0.4.2"
 proptest = { version = "0.10.1", optional = true }
 rustyline = "7.0.0"
-rust_decimal = "1.8.1"
+rust_decimal = "1.18.0"
 num-traits = "0.2.14"
 once_cell = "1.4.1"
 reqwest = { version = "0.10.9", features = ["blocking", "json"] }
diff --git a/testsuite/smoke-test/Cargo.toml b/testsuite/smoke-test/Cargo.toml
index 4c12ee2b0941..eeb80e730c38 100644
--- a/testsuite/smoke-test/Cargo.toml
+++ b/testsuite/smoke-test/Cargo.toml
@@ -17,7 +17,7 @@ num = "0.3.0"
 num-traits = "0.2.14"
 rand = "0.7.3"
 regex = "1.4.2"
-rust_decimal = "1.8.1"
+rust_decimal = "1.18.0"
 rusty-fork = "0.3.0"
 statistical = "1.0.0"
 tokio = { version = "0.2.22", features = ["full"] }