diff --git a/.travis/preinstall b/.travis/preinstall
index ec5f052..a8d1216 100755
--- a/.travis/preinstall
+++ b/.travis/preinstall
@@ -12,5 +12,5 @@ fi
 
 if [[ "${LSR_EXTRA_PACKAGES}" ]]; then
   sudo apt-get update
-  sudo apt-get install -my ${LSR_EXTRA_PACKAGES}
+  sudo apt-get --ignore-missing install -y ${LSR_EXTRA_PACKAGES}
 fi