diff --git a/build/service_cpu.Dockerfile b/build/service_cpu.Dockerfile
index 7b978f2365..6afa758150 100644
--- a/build/service_cpu.Dockerfile
+++ b/build/service_cpu.Dockerfile
@@ -33,7 +33,7 @@ RUN apt-get update \
 FROM ubuntu:jammy as rust-base
 
 # NB: This can be "stable" or another version.
-ARG RUST_TOOLCHAIN="1.86.0"
+ARG RUST_TOOLCHAIN="1.93.1"
 
 WORKDIR /tmp