.gitlab-ci.yml: Update docker images
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fc22c5c..5e53715 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -79,18 +79,18 @@
     - coverage-linux/
 
 tests-debian-9:
-  image: buildstream/testsuite-debian:9-master-102-9067e269
+  image: buildstream/testsuite-debian:9-master-108-bd2b3d8d
   <<: *linux-tests
 
 tests-fedora-27:
-  image: buildstream/testsuite-fedora:27-master-102-9067e269
+  image: buildstream/testsuite-fedora:27-master-108-bd2b3d8d
   <<: *linux-tests
 
 
 tests-unix:
   # Use fedora here, to a) run a test on fedora and b) ensure that we
   # can get rid of ostree - this is not possible with debian-8
-  image: buildstream/testsuite-fedora:27-master-102-9067e269
+  image: buildstream/testsuite-fedora:27-master-108-bd2b3d8d
   stage: test
   variables:
     BST_FORCE_BACKEND: "unix"