diff --git a/README.md b/README.md
index 4deee78..11e2f12 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 ## Build dependencies
 The following list of Debian packages must be installed on the build system because they are essentially required for the bootstrapping process. The script will check if all required packages are installed and missing packages will be installed automatically if confirmed by the user.
 
-  ```debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git```
+  ```debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git bc psmisc```
 
 ## Command-line parameters
 The script accepts certain command-line parameters to enable or disable specific OS features, services and configuration settings. These parameters are passed to the `rpi23-gen-image.sh` script via (simple) shell-variables. Unlike environment shell-variables (simple) shell-variables are defined at the beginning of the command-line call of the `rpi23-gen-image.sh` script.
diff --git a/rpi23-gen-image.sh b/rpi23-gen-image.sh
index 9b3a231..0e721a2 100755
--- a/rpi23-gen-image.sh
+++ b/rpi23-gen-image.sh
@@ -175,7 +175,7 @@ APT_INCLUDES=${APT_INCLUDES:=""}
 APT_INCLUDES="${APT_INCLUDES},apt-transport-https,apt-utils,ca-certificates,debian-archive-keyring,dialog,sudo,systemd,sysvinit-utils"
 
 # Packages required for bootstrapping
-REQUIRED_PACKAGES="debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git bc"
+REQUIRED_PACKAGES="debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git bc psmisc"
 MISSING_PACKAGES=""
 
 set +x