diff --git a/ci/run-build-and-tests.sh b/ci/run-build-and-tests.sh
index 98dda42045..18ffedba05 100755
--- a/ci/run-build-and-tests.sh
+++ b/ci/run-build-and-tests.sh
@@ -56,4 +56,8 @@ then
 fi
 check_unignored_build_artifacts
 
+case " $MAKE_TARGETS " in
+*" all "*) make -C contrib/subtree test;;
+esac
+
 save_good_tree
diff --git a/ci/run-test-slice.sh b/ci/run-test-slice.sh
index e167e646f7..8cb0038d07 100755
--- a/ci/run-test-slice.sh
+++ b/ci/run-test-slice.sh
@@ -20,4 +20,7 @@ if [ "$1" == "0" ] ; then
 	group "Run unit tests" make --quiet -C t unit-tests-test-tool
 fi
 
+# Run the git subtree tests only if main tests succeeded
+test 0 != "$1" || make -C contrib/subtree test
+
 check_unignored_build_artifacts