diff --git a/.travis.yml b/.travis.yml
index 2007fb4a..bc98d1b4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,7 @@ env:
   - BASHVER=4.2
   - BASHVER=4.3
   - BASHVER=4.4
+  - BASHVER=5
 
 matrix:
   include:
@@ -21,10 +22,10 @@ services:
 
 script:
 - |
-  if [[ "$TRAVIS_OS_NAME" == 'linux' && -n "$BASHVER" ]]; then
-    docker build --build-arg bashver=${BASHVER} --tag bats/bats:bash-${BASHVER} .
-    docker run -it bash:${BASHVER} --version
-    time docker run -it bats/bats:bash-${BASHVER} --tap /opt/bats/test
+  if [[ "${TRAVIS_OS_NAME:-}" == 'linux' && -n "${BASHVER}" ]]; then
+    docker build --build-arg bashver="${BASHVER}" --tag "bats/bats:bash-${BASHVER}" . &&
+      docker run -it "bash:${BASHVER}" --version &&
+      time docker run -it "bats/bats:bash-${BASHVER}" --tap /opt/bats/test
   else
     time bin/bats --tap test
   fi