diff --git a/resources/Dockerfile b/resources/Dockerfile
index 2fe2b1e0b..ef6060ba8 100644
--- a/resources/Dockerfile
+++ b/resources/Dockerfile
@@ -1,7 +1,7 @@
 FROM ubuntu:20.04 as dev
 
 ARG TARGETARCH
-ARG RUST_TOOLCHAIN="1.55.0"
+ARG RUST_TOOLCHAIN="1.56.0"
 ARG CLH_SRC_DIR="/cloud-hypervisor"
 ARG CLH_BUILD_DIR="$CLH_SRC_DIR/build"
 ARG CARGO_REGISTRY_DIR="$CLH_BUILD_DIR/cargo_registry"