diff --git a/Dockerfile b/Dockerfile
index 84f038d545..68565bdc84 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,7 +10,7 @@ FROM $DOCKER_ARCH/centos:7 AS relay-deps
 ARG DOCKER_ARCH
 ARG BUILD_ARCH=x86_64
 # Pin the Rust version for now
-ARG RUST_TOOLCHAIN_VERSION=1.66.0
+ARG RUST_TOOLCHAIN_VERSION=1.66.1
 
 ENV DOCKER_ARCH=${DOCKER_ARCH}
 ENV BUILD_ARCH=${BUILD_ARCH}