diff --git a/readme.txt b/readme.txt
index 2c8691a..1226991 100644
--- a/readme.txt
+++ b/readme.txt
@@ -5,7 +5,7 @@ makefile target builds a disk image at build/disk.iso that can be booted on a
 64-bit bios system. you can use command [2] to build that. finally, use
 command [3] to run the disk in qemu with gdb attached.
 
-  [1] apt install g++ gdb git make nasm qemu-system-x86 xorriso
+  [1] apt install bison flex g++ gdb git libgmp-dev libmpfr-dev libmpc-dev make nasm qemu-system-x86 texinfo xorriso
   [2] make -j$(nproc)
   [3] make run
 
diff --git a/skeleton/assets/pointer.ppm b/skeleton/assets/pointer.ppm
index 7169033..c462a51 100644
Binary files a/skeleton/assets/pointer.ppm and b/skeleton/assets/pointer.ppm differ