diff --git a/BUILDING.md b/BUILDING.md
index 556172fde..4d90762f5 100644
--- a/BUILDING.md
+++ b/BUILDING.md
@@ -38,11 +38,11 @@ $ sudo unzip protoc-3.11.4-linux-x86_64.zip -d /usr/local
 ```
 
 `containerd` uses [Btrfs](https://en.wikipedia.org/wiki/Btrfs) it means that you
-need to satisfy this dependencies in your system:
+need to satisfy these dependencies in your system:
 
 * CentOS/Fedora: `yum install btrfs-progs-devel`
 * Debian/Ubuntu: `apt-get install btrfs-tools`
-	* Debian Buster/Ubuntu 19.10:
+	* Debian Buster/Ubuntu 19.10/ Ubuntu 20.04:
 	    `apt-get install btrfs-progs libbtrfs-dev`
 
 At this point you are ready to build `containerd` yourself!
@@ -55,6 +55,12 @@ the system, sometimes it is necessary to build runc directly when working with
 container runtime development. You can skip this step if you already have the
 correct version of `runc` installed.
 
+`runc` requires `libseccomp`. You may need to install the missing dependencies:
+
+* CentOS/Fedora: `yum install libseccomp libseccomp-devel`
+* Debian/Ubuntu: `apt-get install libseccomp libseccomp-dev`
+
+
 For the quick and dirty installation, you can use the following:
 
     go get github.com/opencontainers/runc