diff --git a/README.md b/README.md
index 71a567387..0a5f6852d 100644
--- a/README.md
+++ b/README.md
@@ -355,7 +355,7 @@ $ sudo apt-get install libblas-dev liblapack-dev       # For Debian/Ubuntu/Linux
 $ sudo yum install lapack-devel blas-devel             # For Fedora/CentOS/RHEL
 $ sudo zypper install lapack-devel blas-devel          # For OpenSUSE
 $ sudo pacman -S blas lapack                           # For Arch Linux
-$ wget http://sourceforge.net/projects/arma/files/armadillo-10.8.0.tar.xz
+$ wget https://sourceforge.net/projects/arma/files/armadillo-10.8.0.tar.xz
 $ tar xvfz armadillo-10.8.0.tar.xz
 $ cd armadillo-10.8.0
 $ cmake .