diff --git a/.travis/ansible_tests.sh b/.travis/ansible_tests.sh
index ffe775fe..5c236521 100755
--- a/.travis/ansible_tests.sh
+++ b/.travis/ansible_tests.sh
@@ -3,7 +3,7 @@
 
 TRAVIS_BUILD_DIR="${TRAVIS_BUILD_DIR:-`pwd`}"
 TMPDIR="/tmp/ansible-tests-$$"
-ANSIBLE_VERSION="${VER:-2.4.3.0}"
+ANSIBLE_VERSION="${VER:-2.5.5}"
 export ANSIBLE_STRATEGY="${STRATEGY:-mitogen_linear}"
 DISTRO="${DISTRO:-debian}"
 
diff --git a/.travis/debops_common_tests.sh b/.travis/debops_common_tests.sh
index bdfeb146..f1909c10 100755
--- a/.travis/debops_common_tests.sh
+++ b/.travis/debops_common_tests.sh
@@ -4,7 +4,7 @@
 TMPDIR="/tmp/debops-$$"
 TRAVIS_BUILD_DIR="${TRAVIS_BUILD_DIR:-`pwd`}"
 TARGET_COUNT="${TARGET_COUNT:-2}"
-ANSIBLE_VERSION="${VER:-2.4.3.0}"
+ANSIBLE_VERSION="${VER:-2.5.5}"
 DISTRO=debian  # Naturally DebOps only supports Debian.
 
 export PYTHONPATH="${PYTHONPATH}:${TRAVIS_BUILD_DIR}"