diff --git a/arch/arm64-options.mk b/arch/arm64-options.mk
index 51fbca2342..f8c62c3711 100644
--- a/arch/arm64-options.mk
+++ b/arch/arm64-options.mk
@@ -10,3 +10,8 @@ KERNELPARAMS :=
 MACHINEACCELERATORS :=
 
 QEMUCMD := qemu-system-aarch64
+
+# Firecracker binary name
+FCCMD := firecracker
+# Firecracker's jailer binary name
+FCJAILERCMD := jailer
diff --git a/versions.yaml b/versions.yaml
index d5f02d608e..d25f837190 100644
--- a/versions.yaml
+++ b/versions.yaml
@@ -83,7 +83,7 @@ assets:
       uscan-url: >-
         https://github.com/firecracker-microvm/firecracker/tags
         .*/v?(\d\S+)\.tar\.gz
-      version: "v0.20.0"
+      version: "v0.21.1"
 
     qemu:
       description: "VMM that uses KVM"