diff --git a/README.md b/README.md
index 2f90ecb..f743036 100644
--- a/README.md
+++ b/README.md
@@ -57,9 +57,11 @@ Obviously, **Distroless** images are not supported.
 - udev
 - parted
 - e2fsprogs
+- dosfstools (when using fat32)
 - mount
 - tar
-- extlinux
+- extlinux (when using syslinux)
+- grub2 (when using grub)
 - qemu-utils
 - cryptsetup (when using LUKS)
 - [QEMU](https://www.qemu.org/download/#linux) (optional)
@@ -157,6 +159,7 @@ Usage:
 
 Flags:
       --append-to-cmdline string   Extra kernel cmdline arguments to append to the generated one
+      --boot-fs string             Filesystem to use for the boot partition, ext4 or fat32
       --boot-size uint             Size of the boot partition in MB (default 100)
       --bootloader string          Bootloader to use: syslinux, grub (default "syslinux")
       --force                      Override output qcow2 image
@@ -313,6 +316,7 @@ Usage:
 
 Flags:
       --append-to-cmdline string   Extra kernel cmdline arguments to append to the generated one
+      --boot-fs string             Filesystem to use for the boot partition, ext4 or fat32
       --boot-size uint             Size of the boot partition in MB (default 100)
       --bootloader string          Bootloader to use: syslinux, grub (default "syslinux")
       --build-arg stringArray      Set build-time variables
diff --git a/docs/content/reference/d2vm_build.md b/docs/content/reference/d2vm_build.md
index 1eac3de..9524dab 100644
--- a/docs/content/reference/d2vm_build.md
+++ b/docs/content/reference/d2vm_build.md
@@ -10,6 +10,7 @@ d2vm build [context directory] [flags]
 
 ```
       --append-to-cmdline string   Extra kernel cmdline arguments to append to the generated one
+      --boot-fs string             Filesystem to use for the boot partition, ext4 or fat32
       --boot-size uint             Size of the boot partition in MB (default 100)
       --bootloader string          Bootloader to use: syslinux, grub (default "syslinux")
       --build-arg stringArray      Set build-time variables
diff --git a/docs/content/reference/d2vm_convert.md b/docs/content/reference/d2vm_convert.md
index e82d569..62fbe45 100644
--- a/docs/content/reference/d2vm_convert.md
+++ b/docs/content/reference/d2vm_convert.md
@@ -10,6 +10,7 @@ d2vm convert [docker image] [flags]
 
 ```
       --append-to-cmdline string   Extra kernel cmdline arguments to append to the generated one
+      --boot-fs string             Filesystem to use for the boot partition, ext4 or fat32
       --boot-size uint             Size of the boot partition in MB (default 100)
       --bootloader string          Bootloader to use: syslinux, grub (default "syslinux")
       --force                      Override output qcow2 image