diff --git a/README.md b/README.md
index de6f6b4..ea28450 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+![ci](https://github.com/TatriX/cl-sdl2-tutorial/actions/workflows/ci.yml/badge.svg)
+
 # Common Lisp SDL2 tutorials
 Adapted from http://lazyfoo.net/tutorials/SDL/
 
diff --git a/README_LINUX.md b/README_LINUX.md
index b252c57..704be81 100644
--- a/README_LINUX.md
+++ b/README_LINUX.md
@@ -5,7 +5,7 @@
 The SDL2 libraries can be installed on a Debian based system with the command
 below.
 
-	apt install libsdl2-2.0 libsdl2-image-2.0 libsdl2-ttf-2.0
+	apt install libsdl2-dev libsdl2-image-dev libsdl2-ttf-dev
 
 ## Arch