diff --git a/.travis.yml b/.travis.yml
index 4ac85c5a3..1b5b80b81 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -148,6 +148,16 @@ matrix:
           packages:
             - gcc-8
             - g++-8
+    - env: BUILD_TARGET="posix" CC="gcc-9" CXX="g++-9"
+      os: linux
+      compiler: gcc
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - gcc-9
+            - g++-9
     - env: BUILD_TARGET="posix-ncp-spi" VERBOSE=1
       os: linux
       compiler: gcc