diff --git a/beamerthemeSimple.sty b/beamerthemeSimple.sty
index 2825eb4..c16f44e 100644
--- a/beamerthemeSimple.sty
+++ b/beamerthemeSimple.sty
@@ -2,7 +2,7 @@
 %
 % This file may be distributed and/or modified
 % under the LaTeX Project Public License
-\usepackage{libertine}
+\usepackage[sfdefault]{FiraSans}
 \RequirePackage[english]{babel}
 \RequirePackage{fancyhdr}        % header footer
 \RequirePackage{xcolor}
diff --git a/main.pdf b/main.pdf
index aa5d1e4..10ac369 100644
Binary files a/main.pdf and b/main.pdf differ