diff --git a/Cargo.lock b/Cargo.lock
index a27d25264..841e98bb7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -7248,7 +7248,7 @@ dependencies = [
  "log4rs",
  "methods",
  "once_cell",
- "parking_lot 0.11.2",
+ "parking_lot 0.12.1",
  "prettytable-rs",
  "regex",
  "risc0-zkvm",
diff --git a/examples/demo-prover/Cargo.toml b/examples/demo-prover/Cargo.toml
index e227d5b82..444267b6d 100644
--- a/examples/demo-prover/Cargo.toml
+++ b/examples/demo-prover/Cargo.toml
@@ -37,7 +37,7 @@ methods = { path = "./methods" }
 [dev-dependencies]
 tempfile = { workspace = true }
 once_cell = "1.7.2"
-parking_lot = "0.11.1"
+parking_lot = "0.12.1"
 prettytable-rs = "^0.10"
 env_logger = "0.10.0"
 log = "0.4"