Update .travis.yml

thecppzoo · web-flow · commit 988af4ff3fb0 · 2019-08-04T19:56:09.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,13 @@
 dist: bionic
 
+addons:
+  apt:
+    sources:
+    - sourceline: 'ppa:ubuntu-toolchain-r/test'
+    - packages:
+      - gcc-9
+      - g++-9
+    
 language: cpp
 
 matrix:
