diff --git a/Cargo.lock b/Cargo.lock
index 80b75cebd8896..b7e9b6c45ec06 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -6629,17 +6629,6 @@ dependencies = [
  "zstd-sys",
 ]
 
-[[package]]
-name = "readonly"
-version = "0.2.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8f439da1766942fe069954da6058b2e6c1760eb878bae76f5be9fc29f56f574"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.37",
-]
-
 [[package]]
 name = "redis"
 version = "0.23.3"
@@ -7514,7 +7503,6 @@ dependencies = [
  "pretty_assertions",
  "prometheus",
  "rand",
- "readonly",
  "risingwave_batch",
  "risingwave_common",
  "risingwave_common_service",
diff --git a/src/frontend/Cargo.toml b/src/frontend/Cargo.toml
index 8bb4ef8bcfcb6..37f9f6326faea 100644
--- a/src/frontend/Cargo.toml
+++ b/src/frontend/Cargo.toml
@@ -48,7 +48,6 @@ pretty-xmlish = "0.1.13"
 pretty_assertions = "1"
 prometheus = { version = "0.13", features = ["process"] }
 rand = "0.8"
-readonly = "0.2"
 risingwave_batch = { workspace = true }
 risingwave_common = { workspace = true }
 risingwave_common_service = { workspace = true }