diff --git a/BUILDING.md b/BUILDING.md
index aac98f4ea88..03c44ed6971 100644
--- a/BUILDING.md
+++ b/BUILDING.md
@@ -21,13 +21,13 @@ Ensure the following OS packages are installed:
 ##### Ubuntu
 
 ```
-apt install build-essential libssl-dev pkg-config
+apt install build-essential openssl libssl-dev pkg-config liblz4-tool
 ```
 
 ##### Fedora
 
 ```
-yum install make automake gcc openssl-devel pkg-config
+yum install make automake gcc openssl openssl-devel pkg-config lz4 perl-FindBin perl-lib
 ```
 
 
@@ -55,6 +55,10 @@ Builds rely on Docker's integrated BuildKit support, which has received many fix
 You'll need to have Docker installed and running, with your user account added to the `docker` group.
 Docker's [post-installation steps for Linux](https://docs.docker.com/install/linux/linux-postinstall/) will walk you through that.
 
+> Note: If you're on a newer Linux distribution using the unified cgroup hierarchy with cgroups v2, you may need to disable it to work with current versions of runc.
+> You'll know this is the case if you see an error like `docker: Error response from daemon: OCI runtime create failed: this version of runc doesn't work on cgroups v2: unknown.`
+> Set the kernel parameter `systemd.unified_cgroup_hierarchy=0` in your boot configuration (e.g. GRUB) and reboot.
+
 ### Build process
 
 To build an image, run: