diff --git a/docs/usage/installation.rst b/docs/usage/installation.rst
index 20ec282a..26b81261 100644
--- a/docs/usage/installation.rst
+++ b/docs/usage/installation.rst
@@ -48,8 +48,8 @@ macOS (tested on Catalina 10.15)
 #. See Usage section below. 
 
 
-Linux (tested on Ubuntu 18.04)
-------------------------------
+Linux (tested on Ubuntu 18.04 & 20.04)
+---------------------------------------
 
 #. Install dependencies :
 
@@ -66,7 +66,8 @@ Linux (tested on Ubuntu 18.04)
 #. Install R 4.0 . If you have other instances of R, we recommend uninstalling them.
 
     - ``sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9``
-    - ``sudo add-apt-repository 'deb https://cloud.r-project.org/bin/linux/ubuntu bionic-cran40/'``
+    - (for 18.04 use command) ``sudo add-apt-repository 'deb https://cloud.r-project.org/bin/linux/ubuntu bionic-cran40/'``
+    - (for 20.04 use command) ``sudo add-apt-repository 'deb https://cloud.r-project.org/bin/linux/ubuntu focal-cran40/'``
     - ``sudo apt update``
     - ``sudo apt install r-base``