diff --git a/doc/getting-started/building-from-source.rst b/doc/getting-started/building-from-source.rst
index ceb99c84a..76ea7a344 100644
--- a/doc/getting-started/building-from-source.rst
+++ b/doc/getting-started/building-from-source.rst
@@ -79,8 +79,16 @@ Install the necessary tools for the following systems:
           libblkid-dev \
           e2fslibs-dev \
           pkg-config \
-          libnuma-dev
+          libnuma-dev \
+          liblz4-tool \
+          flex \
+          bison
+
      $ sudo pip3 install kconfiglib
+     $ wget https://acpica.org/sites/acpica/files/acpica-unix-20191018.tar.gz
+     $ tar zxvf acpica-unix-20191018.tar.gz
+     $ cd acpica-unix-20191018
+     $ make clean && make iasl && make install
 
   .. note::
      ACRN requires ``gcc`` version 7.3.* (or higher) and ``binutils`` version
diff --git a/doc/getting-started/rt_industry_ubuntu.rst b/doc/getting-started/rt_industry_ubuntu.rst
index 095fa77e9..3d181960e 100644
--- a/doc/getting-started/rt_industry_ubuntu.rst
+++ b/doc/getting-started/rt_industry_ubuntu.rst
@@ -154,6 +154,10 @@ Build the ACRN Hypervisor on Ubuntu
         bison
 
       $ sudo pip3 install kconfiglib
+      $ wget https://acpica.org/sites/acpica/files/acpica-unix-20191018.tar.gz
+      $ tar zxvf acpica-unix-20191018.tar.gz
+      $ cd acpica-unix-20191018
+      $ make clean && make iasl && make install
 
 #. Get the ACRN source code: