diff --git a/Cargo.toml b/Cargo.toml
index 066dc8d0..650abf27 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ resolver = "2"
 [workspace.package]
 version = "0.1.0"
 edition = "2024"
-rust-version = "1.88"
+rust-version = "1.91"
 license = "MIT OR Apache-2.0"
 
 [workspace.lints]
diff --git a/crates/witness-generator-cli/Dockerfile b/crates/witness-generator-cli/Dockerfile
index 596f00db..434e40df 100644
--- a/crates/witness-generator-cli/Dockerfile
+++ b/crates/witness-generator-cli/Dockerfile
@@ -1,5 +1,5 @@
 # Build the witness-generator
-FROM rust:1.88 AS builder
+FROM rust:1.91 AS builder
 RUN apt-get update && apt-get install -y build-essential libclang-dev
 WORKDIR /usr/src/zkevm-benchmark-workload
 COPY . .