1 files changed, 1 insertions, 1 deletions
diff --git a/.travis.yml b/.travis.yml
index 82b7bbdf..8dc9fc65 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -43,7 +43,7 @@ matrix:
       addons:
         apt:
           sources:
-            - ubuntu-toolchain-r-test
+            - sourceline: 'ppa:ubuntu-toolchain-r/test'
           packages:
             - g++-8-multilib
             - make