diff --git a/scripts/appveyor/install_boost.ps1 b/scripts/appveyor/install_boost.ps1
index 383c555e..60d2b8a9 100644
--- a/scripts/appveyor/install_boost.ps1
+++ b/scripts/appveyor/install_boost.ps1
@@ -1,6 +1,6 @@
 Add-Type -AssemblyName System.IO.Compression.FileSystem
 
-$boostUrl = 'http://downloads.sourceforge.net/project/boost/boost/1.61.0/boost_1_61_0.7z?r=https%3A%2F%2Fsourceforge.net%2Fprojects%2Fboost%2Ffiles%2Fboost%2F1.61.0%2F&ts=1468862599&use_mirror=ncu'
+$boostUrl = 'https://downloads.sourceforge.net/project/boost/boost/1.61.0/boost_1_61_0.7z?r=https%3A%2F%2Fsourceforge.net%2Fprojects%2Fboost%2Ffiles%2Fboost%2F1.61.0%2F&ts=1468862599&use_mirror=ncu'
 $boostArchive = 'C:\projects\boost_1_61_0.7z'
 $boostFolder = 'C:\projects\boost_1_61_0'
 $boostLibraries = @(
diff --git a/scripts/travis/install_boost.sh b/scripts/travis/install_boost.sh
index 27f8c59d..6d049a01 100644
--- a/scripts/travis/install_boost.sh
+++ b/scripts/travis/install_boost.sh
@@ -16,7 +16,7 @@ function isLibraryMissing {
 if isLibraryMissing; then
   cd ~
 
-  wget http://downloads.sourceforge.net/project/boost/boost/1.61.0/${BOOST_BASENAME}.tar.bz2
+  wget https://downloads.sourceforge.net/project/boost/boost/1.61.0/${BOOST_BASENAME}.tar.bz2
   tar xf ${BOOST_BASENAME}.tar.bz2
 
   cd $BOOST_BASENAME